Term
| The computer locks up and/or displays a blue screen. What are the probable causes? |
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Definition
The computer is overheating.
Some of the operating system files may be corrupted.
The power supply, RAM, hard drive, or motherboard may be defective.
The BIOS settings may be incorrect.
An incorrect driver has been installed. |
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Term
| The keyboard or mouse does not respond. What are the probable causes? |
|
Definition
The computer has a wrong, incorrectly installed, not current, or incompatible driver.
The input/output software is not installed properly.
The operating system is not up to date.
The cable has been damaged.
The device is defective.
The computer has a virus. |
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Term
| The application does not install. What are the probable causes? |
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Definition
The downloaded application installer contains a virus and has been prevented from installing by virus protection software.
The installation disk or file is corrupted.
The application is not compatible with the operating system.
There are too many programs running and not enough memory remaining to install the application. |
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Term
| The operating system will not start. What are the probable causes? |
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Definition
There is a non-bootable disk in the boot drive.
Some of the operating system files may be corrupted.
The Master Boot Record is corrupted.
The power supply, RAM, hard drive, or motherboard may be defective. |
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Term
| A document will not print even though the printer is correctly installed and configured and the application is functioning properly. What are the probable causes? |
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Definition
The print spooler has become overloaded and stopped responding.
The printer software is outdated.
The operating system has been automatically updated with a bad driver. |
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Term
| Laptop does not power on. What are the probable causes? |
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Definition
Laptop is not plugged in.
Battery is not charged.
Battery will not hold a charge. |
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Term
| Laptop battery supports the system for a reduced period of time. What are the probable causes? |
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Definition
Proper battery charging and discharging practices have not been followed.
Extra peripherals are draining the battery.
Power scheme isn't configured correctly.
Battery is not holding a charge for very long. |
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Term
| External display has power but no image on the screen. What are the probable causes? |
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Definition
Video cable is loose or damaged.
The laptop is not sending video signal to the external display. |
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Term
| Laptop is powered on, but nothing is displayed on the LCD screen when the laptop lid is reopened. What are the probable causes? |
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Definition
| LCD Cutoff Switch is dirty or damaged. The laptop has gone into sleep mode. |
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Term
| The image on a laptop screen looks dull and pale. What is the probable cause? |
|
Definition
| The LCD back-light is not properly adjusted. |
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|
Term
| The image on the laptop screen looks pixilated. What is the probable cause? |
|
Definition
| The LCD display properties are incorrect. |
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Term
| The network is fully functional and the wireless laptop connection is enabled, but the laptop cannot connect to the network. What are the probable causes? |
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Definition
Laptop wireless capability is turned off.
External wireless antenna is misaligned.
Out of wireless range. |
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|
Term
| An application document does not print. What is the probable cause? |
|
Definition
| There is a document error in the print queue. |
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|
Term
| Printer cannot be added or there is a print spooler error. What is the probable cause? |
|
Definition
| The printer service is stopped or not working properly. |
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|
Term
| Printer jobs are sent to the print queue but are not printed. What is the probable cause? |
|
Definition
| The printer has been installed on the wrong port. |
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|
Term
| The print queue is functioning properly, but the printer does not print. What is the probable cause? |
|
Definition
| There is a bad cable connection. |
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|
Term
| Printer is printing unknown character or does not print a test page. What is the probable cause? |
|
Definition
| Wrong or outdated printer driver is installed. |
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|
Term
| Printer prints unknown characters or does not print anything. What are the probable cause? |
|
Definition
Printer may be plugged into an UPS.
Incorrect print driver installed.
Printer cables are loose.
No paper in printer. |
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|
Term
| Paper jams when printing. What are the probable causes? |
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Definition
Printer is dirty.
The wrong paper type is being used.
Humidity causes the paper to stick together. |
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|
Term
| NIC LED lights are not lit. What are the probable causes? |
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Definition
| The network cable is unplugged, bad or damaged. |
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|
Term
| The user cannot telnet into a remote device. What are the probable causes? |
|
Definition
The firewall is blocking port 23.
The remote device is not configured for Telnet access.
Telnet is not allowed from the user or a particular network. |
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Term
| Older laptop cannot detect the wireless router. What are the probable causes? |
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Definition
The wireless router/access point is configured with a different 802.11 protocol.
The SSID is not being broadcast.
The wireless NIC in the laptop is disabled. |
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Term
| Computer has an IP address of 169.254.x.x. What are the probable causes? |
|
Definition
The network cable is unplugged.
The router is powered off or the connection is bad.
The NIC is bad. |
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|
Term
| Remote device does not respond to a ping request. What are the probable causes? |
|
Definition
Windows firewall disables ping by default.
The remote device is configured to not respond to ping requests. |
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|
Term
| One user can log on to the local network but cannot access the Internet. What is the probable causes. |
|
Definition
| The gateway address is incorrect. |
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|
Term
| The network is fully functional and the wireless laptop connection is enabled, but the laptop cannot connect to the network. What are the probable causes? |
|
Definition
The laptop wireless capability is turned off.
The external wireless antenna is misaligned.
The laptop is out of wireless range. |
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|
Term
| Wireless network is compromised even though the 128-bit WEP encryption is in use. What is the probable cause? |
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Definition
| A hacker is using common hacking tools to compromise the network. |
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|
Term
| A user is receiving hundreds or thousands of junk e-mails each day. What is the probable cause? |
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Definition
| The network is not providing detection or protection for the e-mail server from spammers. |
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|
Term
| An unknown printer repair person is observed looking under keyboards and on desktops. What is the probable cause? |
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Definition
| Visitors are not being monitored properly or user credentials have been stolen to enter the building. |
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|
Term
| An unauthorized wireless access point is discovered on the network. What is the probable cause? |
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Definition
| A user has added a wireless access point to increase the wireless range of the company network. |
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Term
| User with flash drives are infecting computers on the network with viruses? |
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Definition
| The flash drive is infected with a virus and is not scanned by virus protection software when a network computer accesses it. |
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Term
| The computer does not recognize a storage device. What are the probable causes? |
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Definition
The power cable is loose.
The data cable is loose.
The jumpers are set incorrectly.
The storage device has failed.
The storage device settings in the CMOS are incorrect. |
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Term
| The floppy disk drive will not read media or the drive light stays on constantly. What are the probable causes? |
|
Definition
The power cable or the data cable connection is loose.
Pin 1 on the data cable is not connected to Pin 1 on the drive.
The FDD settings in CMOS are incorrect.
The disc is bad or not formatted.
The disc is inserted upside down. |
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|
Term
| The computer fails to recognize an optical disc. What are the probable causes? |
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Definition
The optical drive is faulty.
The disc is inserted upside down.
There is more than one disc inserted in the drive.
The disc is damaged.
The disc is the wrong format. |
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|
Term
| Computer will not eject the optical disc? What are the probable causes? |
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Definition
The optical drive is jammed.
The optical drive has been locked by software.
The optical drive is faulty. |
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Term
| The computer does not recognize a SCSI drive. What are the probable causes? |
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Definition
The SCSI drive has an incorrect SCSI ID.
The SCSI termination is not set correctly.
The external SCSI drive was not powered on prior to booting the computer. |
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Term
| The computer does not recognize a removable external drive. What are the probable causes? |
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Definition
The removable external drive is faulty.
The removable external drive is not seated properly.
The OS does not have the correct drivers for the removable external drive.
The external ports are disabled in the CMOS settings. |
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|
Term
| A media reader cannot read an SD card that works fine in the camera. What are the probable causes? |
|
Definition
The media reader does not support the SD card type.
The media reader is not connected correctly.
The media reader is not configured proper in the CMOS settings.
The media reader is bad. |
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|
Term
| The clock on the computer is no longer keeping the correct time or the CMOS settings are changing when the computer is rebooted. What are the probable causes? |
|
Definition
The CMOS battery may be loose.
The CMOS battery may be failing. |
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|
Term
| Retrieving or saving data from the USB flash drive is slow. What are the probable causes? |
|
Definition
The motherboard does not support USB 2.0.
The USB flash drive does not support USB 2.0.
The port is set to full speed in the CMOS setting. |
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|
Term
| After updating the BIOS firmware, the computer will not start. What is the probable cause? |
|
Definition
| The BIOS firmware update did not install correctly. |
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|
Term
| The computer displays the incorrect CPU information when the computer boots. What are the probable causes? |
|
Definition
The motherboard has incorrect jumper settings.
The CPU settings are not correct in the advanced CMOS settings.
BIOS does not properly recognize the CPU. |
|
|
Term
| The hard drive LED on the front of the computer does not light. What are the probable causes? |
|
Definition
The hard drive LED cable is not connected or loose.
The hard drive LED cable is incorrectly oriented to the front case panel connections. |
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|
Term
| The built-in NIC has stopped working on a computer. What are the probable causes? |
|
Definition
The NIc drivers are corrupted.
The NIC has failed. |
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|
Term
| The computer does not display any video after installing a new PCIe video card. What are the probable causes? |
|
Definition
CMOS settings are set to use the built-in video.
The cable is still connected to the built-in video.
Drivers for the new video card are not installed or incorrect.
The new video card is not working. |
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|
Term
| The new sound card does not work. What are the probable causes? |
|
Definition
An incorrect device driver is installed.
The speakers are not connected to the correct jack.
The audio is muted.
The sound card is bad.
The CMOS settings are set to use the on-board sound device. |
|
|
Term
| The computer will not turn on. What are the probable causes? |
|
Definition
The computer is not plugged into the AC outlet.
The AC outlet is bad.
The power cord is bad.
The power supply switch is not turned on.
The power supply switch is set to the incorrect voltage.
The power button is not connected correctly to the front panel connector.
The power supply has failed. |
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|
Term
| The computer reboots, turns off unexpectedly or has a burning smell. What is the probable cause? |
|
Definition
| The power supply is starting to fail. |
|
|
Term
| The computer will not boot, locks up, or the CPU fan is making an unusual noise. What are the probable causes? |
|
Definition
The CPU has failed.
The CPU has overheated.
The CPU fan is failing. |
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|
Term
| The computer reboots without warning, locks up or displays error messages or the BSOD. What are the probable causes? |
|
Definition
The front-side bus is set too high.
The CPU multiplier is set too high.
The CPU voltage is set too high. |
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|
Term
| After upgrading from a single core CPU to a dual core CPU, the computer runs slower and only shows one CPU graph in Task Manager. What is the probable cause? |
|
Definition
| The BIOS does not recognize the dual core CPU. |
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|
Term
| Some external devices from a 32-bit computer do not work on a new 64-bit computer. What is the probable cause? |
|
Definition
| Incorrect device drivers are installed. |
|
|
Term
| A new CPU will not install onto the motherboard. What is the probable cause? |
|
Definition
| The CPU is the incorrect type. |
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|
Term
| The computer does not recognize the new RAM that was added. What are the probable causes? |
|
Definition
The new RAM is bad.
The incorrect RAM type was installed.
The new RAM is loose in the memory slot.
The new RAM was installed in the wrong memory slot. |
|
|
Term
| After upgrading a computer to Windows Vista, the computer runs very slowly. What are the probable causes? |
|
Definition
The computer does not have enough RAM.
The video card does not have enough memory. |
|
|
Term
| A computer with both DDR and DDR2 RAM installed only recognizes the DDR2 RAM. What is the probable causes? |
|
Definition
| The computer does not support the installation of both DDR and DDR2 RAM. |
|
|
Term
| A computer with Windows Vista installed does not run Aero. What are the probable causes? |
|
Definition
| The computer does not meet the minimum hardware requirements for running Aero. |
|
|
Term
| The search feature takes a long time to find results. What are the probable causes? |
|
Definition
The index service is not running.
The index service is not indexing the correct locations. |
|
|
Term
| The UAC no longer prompts the user for permission. What is the probable cause? |
|
Definition
| The UAC has been turned off. |
|
|
Term
| No gadgets appear in the sidebar. What are probable causes? |
|
Definition
| The XML necessary to render the gadget is broken, corrupted, or not installed. |
|
|
Term
| The computer is running slowly and has delayed response to user input. What is the probable cause? |
|
Definition
| A process is using most of the CPU resources. |
|
|
Term
| The computer displays an "Invalid Boot Disk" error after the POST. What are the probable causes? |
|
Definition
Media that does not have an operating system is in the drive.
The boot order is not set correctly in the CMOS.
The hard drive is not detected or the jumpers are not set correctly.
The hard drive does not have an operating system installed.
The MBR is corrupted.
The computer has a boot sector virus.
The hard drive is failing. |
|
|
Term
| The computer displays an "Inaccessible Boot Device" error after the POST. What are the probable causes? |
|
Definition
A recently installed device driver is incompatible with the boot controller.
NTLDR is corrupted. |
|
|
Term
| The computer displays a "Missing NTLDR" error after the POST. What are the probable causes? |
|
Definition
NTLDR is missing or damaged.
Ntdecect.com is missing or damaged.
Boot.ini is missing or damaged.
The boot order is not set correctly in CMOS.
The MBR is corrupted.
The hard drive is failing.
The hard drive jumpers are not set correctly. |
|
|
Term
| A service failed to start when the computer booted. What are the probable causes? |
|
Definition
The service is not enabled.
The service is set to manual.
The failed service requires another service to be enabled.
A driver is corrupted. |
|
|
Term
| A device did not start when the computer booted. What are the probable causes? |
|
Definition
The data cable or power cable is not connected to the device.
The device has been disabled in the CMOS.
The device has a conflict with a newly installed device. |
|
|
Term
| A program listed in the registry is not found. What are the probable causes? |
|
Definition
One or more program files have been deleted.
The uninstall program did not work correctly.
The installation directory has been removed.
The hard drive has become corrupted.
The computer has a virus. |
|
|
Term
| The computer continually restarts without displaying the desktop. What are the probable causes? |
|
Definition
The computer is set to restart when there is a failure.
A startup file has become corrupted. |
|
|
Term
| The computer displays a BSOD. What are the probable causes? |
|
Definition
A driver is not compatible with the hardware.
The RAM is failing.
The power supply is failing.
The CPU is failing.
The motherboard is failing. |
|
|
Term
| The computer locks up without any error messages. What are the probable causes? |
|
Definition
The CPU or FSB settings are incorrect on the motherboard or in the CMOS.
The computer is overheating.
An update has corrupted the operating systems.
The RAM is failing.
The hard drive is failing.
The power supply is failing. |
|
|
Term
| An application fails to install, start or load. What are the probable causes? |
|
Definition
The installation files are corrupted.
The hardware does not meet the minimum requirements.
The application is incompatible with the operating system.
The hard drive is failing. |
|
|
Term
| Laptop screen appears black or very dim. A buzzing noise may also be heard. What is the probable cause? |
|
Definition
| LCD screen inverter or back-light lamp failure. |
|
|
Term
| Laptop screen only displays vertical lines that can change colors. What is the probable cause? |
|
Definition
|
|
Term
| External LCD connected to the laptop shows content but the laptop screen is blank. What is the probable cause? |
|
Definition
| The laptop screen is not set to display output. |
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|
Term
| Press Fn key with the appropriate multifunction key to display output on the laptop screen. What is the probable cause? |
|
Definition
| The laptop screen displays rotated images. |
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|
Term
| LCD screen and external monitor will not display images, while the laptop hard drive and the fans are operating normally. |
|
Definition
| The laptop motherboard or the video card has failed. |
|
|
Term
| Laptop does not return from Standby or Hibernate mode. What is the probable cause? |
|
Definition
| The laptop has a conflict between the BIOS and the Windows power management settings. |
|
|
Term
| Laptop hard drive has data access errors and makes unusual noises. What is the probable cause? |
|
Definition
|
|
Term
| Laptop will not boot or access a newly installed hard drive. What are the probable causes? |
|
Definition
The hard drive is not connected properly.
The BIOS does not recognize the new hard drive. |
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|
Term
| Laptop accesses the hard drive excessively. What are the probable causes? |
|
Definition
The virtual memory is set incorrectly.
Additional RAM is needed.
Free hard drive space is limited. |
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|
Term
| Laptop makes a long beeping noise after installing new RAM. What are the probable causes? |
|
Definition
The wrong type of RAM is installed.
The RAM is installed incorrectly.
A damaged RAM module is installed. |
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|
Term
| Laptop LED power light is not on when the laptop is plugged into an AC outlet. What are the probable causes? |
|
Definition
The AC power source is not working.
The power cable is not securely connected to the laptop.
The AC adapter is defective. |
|
|
Term
| Laptop will not power on when only using the battery. What are the probable causes? |
|
Definition
The battery is not connected correctly.
The battery does not have a charge.
The battery is defective. |
|
|
Term
| The laptop operation time while using the battery is very short. What are the probable causes? |
|
Definition
|
|
Term
| Date and time are incorrect when the laptop is powered on. What are the possible causes? |
|
Definition
The CMOS battery has failed.
The CMOS battery is loose. |
|
|
Term
| The laptop touch pad or pointer device is not responsive. What are the probable causes? |
|
Definition
The touch pad or pointer device is disabled.
The touch pad or pointer device is defective. |
|
|
Term
| The laptop touch pad responds erratically. What are the probable causes? |
|
Definition
| The touch pad is not calibrated. |
|
|
Term
| The laptop keyboard does not work or individual keys do not work. What are the probable causes? |
|
Definition
The keyboard has been damaged by liquid.
The laptop keyboard has a loose connection.
The keyboard is worn or old. |
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|
Term
| Laptop shut off randomly or is excessively hot. What are the probable causes? |
|
Definition
The laptop has poor ventilation.
The laptop has a faulty fan.
The CPU heat sink is dirty or loose. |
|
|
Term
| Laptop will not startup and only the fans and LEDs are working. What are probable causes? |
|
Definition
|
|
Term
| Laptop built-in speakers are not producing any sound. What are the probable causes? |
|
Definition
The audio is disabled in BIOS.
The sound is muted.
The laptop built-in speakers are damaged. |
|
|
Term
| Cannot insert a PC Card into the laptop. What are the probable causes? |
|
Definition
The PC Card is not supported by the laptop.
The plastic protector is installed in the card slot. |
|
|
Term
| Printer prints unknown characters or does not print anything. What are the probable causes? |
|
Definition
The printer may be plugged into a UPS.
An incorrect print driver is installed.
The printer cables are loose.
There is no paper in the printer.
The printer has been set to Pause Printing.
The printer has been set to Use Printer Offline. |
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|
Term
| Paper jams when printing. What are the probable causes? |
|
Definition
The printer is dirty.
The wrong paper type is being used.
Humidity causes the paper to stick together. |
|
|
Term
| Printer outputs only blank paper for print jobs. What are possible causes? |
|
Definition
The toner or ink cartridge is empty or locked in place with packaging tape.
The drum is not holding a charge.
The nozzles in the ink cartridge are blocked with dust or clogged with dried ink. |
|
|
Term
| Printer will not print large or complex images. What is the probable cause? |
|
Definition
| The printer does not have enough memory. |
|
|
Term
| Laser printer prints lines or streaks on every page. What is the probable cause? |
|
Definition
|
|
Term
| Printed pages show ghost images. What is the probable cause? |
|
Definition
The drum is scratched or dirty.
The drum wiper blade is worn. |
|
|
Term
| A computer can connect to a network device by the IP address but not by the host name. What are the probable causes? |
|
Definition
Incorrect host name.
Incorrect DNS settings.
DNS server is not operational. |
|
|
Term
| The computer does not obtain or renew the IP address. What are the probable causes? |
|
Definition
The computer is using a static IP address.
Loose network cable.
Firewall is blocking DHCP. |
|
|
Term
| An IP address conflict message displays when connecting a new computer to the network. What is the probable cause? |
|
Definition
| The same IP address is assigned to two different devices on the network. |
|
|
Term
| A computer has network access but does not have Internet access. What are probable causes? |
|
Definition
The gateway IP address is incorrect.
A router is not operational or is configured incorrectly. |
|
|
Term
| The computer automatically obtained the IP address 169.254.x.x. but cannot connect to the network. What are the probable causes? |
|
Definition
The DHCP server is not on.
The computer is not connected to the network. |
|
|
Term
| A computer cannot ping the loopback address. What are the probable causes? |
|
Definition
The TCP/IP suite is corrupted.
The NIC is damaged. |
|
|
Term
| The computer cannot send or receive e-mail. What are the probable causes? |
|
Definition
The computer has incorrect e-mail client settings.
The e-mail server is down.
There is a loose or disconnected network cable. |
|
|
Term
| The computer can send e-mail, but cannot receive e-mail. What is the probable cause? |
|
Definition
|
|
Term
| The computer cannot receive a certain e-mail attachment. What are the probable causes? |
|
Definition
The e-mail attachment is too large.
The e-mail attachment contains a virus and has been blocked by virus protection. |
|
|
Term
| The computer cannot authenticate to the e-mail server. What is the probable cause? |
|
Definition
| The username or password is not correct. |
|
|
Term
| The user cannot access the FTP server. What are the probable causes? |
|
Definition
Port forwarding is not enabled in the router.
The maximum number of users has been reached. |
|
|
Term
| The FTP client software cannot find the FTP server? What are the probable causes? |
|
Definition
The FTP client has an incorrect IP address or port setting.
The FTP server is not running. |
|
|
Term
| The FTP server disconnects the client after a short period of inactivity. What is the probable cause? |
|
Definition
| The FTP server does not allow connected clients to remain connected when no commands are being sent to the FTP server. |
|
|
Term
| A user cannot log on to the FTP server. What is the probable cause? |
|
Definition
| The username or password is incorrect. |
|
|
Term
| Unauthorized users discover authentication information during a telnet session. What is the probable cause? |
|
Definition
| Telnet connection is not secure. |
|
|
Term
| A computer cannot access a specific HTTPS site. What is the probable cause? |
|
Definition
| The browser certificated SSL setting is incorrect. |
|
|
Term
| The computer can ping an IP address but not a host name. What are the probable causes? |
|
Definition
The host name is incorrect.
The DNS settings of the computer are incorrect.
The DNS server is not operational.
NetBIOS over TCP/IP is not enabled. |
|
|
Term
| A computer on one network cannot ping a computer on another network. What are the probable causes? |
|
Definition
There is a bad connection or broken device between the two networks.
ICMP echo request is disabled. |
|
|
Term
| NSlookup reports "Can't find server name for address 127.0.0.0: timed out." What is the probable cause? |
|
Definition
| The DNS IP address is not configured on the local computer. |
|
|
Term
| A computer cannot connect to a shared network folder using the net use command. What are the probable causes? |
|
Definition
The folder is not shared.
The computer is not in the same workgroup. |
|
|
Term
| A computer cannot connect to a shared network folder using the net use command. What are the probable causes? |
|
Definition
The folder is not shared.
The computer is not in the same workgroup. |
|
|
Term
| When attempting to use the ipconfig /release or ipconfig /renew command, you receive the message: "No operation can be performed on this adapter while its media is disconnected." What are the probable causes? |
|
Definition
The network cable is unplugged.
No NIC is installed.
The computer has been configured with a static IP address. |
|
|
Term
| The computer cannot telnet into a remote computer. What are the probable causes? |
|
Definition
The telnet service has stopped.
The remote computer has not been configured to accept telnet connections. |
|
|
Term
| Anti-virus software has found infected files. What are the probable causes? |
|
Definition
| A virus has been downloaded to the computer from removable flash media, the Internet or an e-mail. |
|
|
Term
| Computer runs slowly at the same time every day. What is the probable cause? |
|
Definition
| Anti-virus software is set to scan the computer at the same time everyday. |
|
|
Term
| Computer runs slowly at the same time every day. What is the probable cause? |
|
Definition
| Anti-virus software is set to scan the computer at the same time everyday. |
|
|
Term
| Computer runs more slowly than normal stops responding, or locks up often. Installed programs are corrupted or missing. Computer reports less memory than the amount of memory installed. Computer powers off by itself. Windows Start button does not display. What is the probable cause? |
|
Definition
| The computer is infected with a virus. |
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Term
| Internet browser displays an incorrect home page. Software firewall and anti-virus programs are turned off automatically. What is the probable cause? |
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Definition
| The computer has been infected with spyware. |
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Term
| User can log on but cannot access some folders and files. What is the probable cause? |
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Definition
| The user is not a member of the group that has access to the folders and files. |
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Term
| Use can location a file on the serve but cannot download the file. What is the probable cause? |
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Definition
| The user permissions are not correct. |
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Term
| User is gaining access to a subfolder that should be inaccessible. What are the probable causes? |
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Definition
| The subfolder inherited permissions from the upper level folder. |
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Term
| Users of a group cannot see one folder to which they are supposed to have access. What is the probable cause? |
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Definition
| The folder permissions are set to deny. |
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Term
| Encrypted files that are moved over the network to a new computer are no longer encrypted. What is the probable cause? |
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Definition
| The new computer does not have an NTFS partition. |
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Term
| User complains that the computer BIOS settings keep changing. What is the probable cause? |
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Definition
| The BIOS password is not set, allowing others to change the BIOS settings. |
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Term
| TPM does not show up in the Device Manager. What is the probable cause? |
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Definition
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Term
| Computer cannot ping another computer on the network. What are the probable causes? |
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Definition
The Windows Firewall is blocking ping requests.
A router is blocking ping requests. |
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Term
| Laptop firewall exceptions are allowing unauthorized connections from rouge computers. What are probable causes? |
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Definition
The Windows Firewall settings are incorrect.
The Windows Firewall is disabled. |
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Term
| Computer cannot telnet to another computer. What are the probable causes? |
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Definition
The Windows Firewall blocks port 23 by default.
The router is blocking port 23. |
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Term
| E-mail program is properly configured but cannot connect to the e-mail server. What are the probable causes? |
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Definition
The e-mail server is down.
The Windows Firewall is blocking the e-mail software. |
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Term
| Computer can ping outside the local network but cannot access the World Wide Web. What are the probable causes? |
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Definition
The Windows Firewall is blocking port 80.
The router is blocking port 80. |
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Term
| The computer can ping the proxy server, but cannot access web pages. What are the probable causes? |
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Definition
The browser proxy server settings are incorrect.
The proxy server is offline. |
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