HDD Hardware Checks

If you cannot access the hard disk drive, and its configuration settings are correct, you must troubleshoot the hardware components associated with the hard disk drive. As previously indicated, these components include the drive, its signal cable, and the HDC. Like the FDC from the floppy disk drive,...

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BASIC HDD Checks

If the HDD configuration information is correct and you suspect a hard disk drive problem, the first task is to determine how extensive the HDD problem is place a clean boot disk in the A: Drive and try to boot the system. Then, execute a DOS DIR command to access the C:Drive if the system can see...

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HDD Configuration Checks

While booting up the system, observe the BIOS's HDD type information displayed on the monitor. Note the type of HHD that the BIOS believes is installed in the system. The values stored in the CMOS memory must accurately reflect the actual HDDs format installed in the system. otherwise an error occurs....

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HARD DISK DRIVE PROBLEMS

Typical symptoms associated with hard disk drive (HDD) failures include the following: * The computer does not boot up when turned on. * The computer boots up to a sysmtem disk in the A: drive, but not to the hard drive, indicating that the systme files on the HDD are mising or have become corrupt. *...

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Monitor Problems Toubleshooting

All the circuitry discussed so far is part of the computer or its video adapter unit. The circuitry inside the monitor is responsible for accepting, amplifying, and routing the video and synchronizing information to the CRT's electron guns and the deflection coils. Monitor Handling Show...

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Mouse Problems Troubleshooting

The levels of mouse troubleshooting move from configuration problems to software problems including command line, windows, and applications to hardware problems. Maintenance of the mouse if fairly simple. Most of the problems with mice involve the trackball. As the mouse is moved across the table,...

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Keyboard Problems Troubleshooting

Most of the circuitry associated with the computers keyboard is contained in the keyboard itself. However, some keyboard interface circuitry is located on the system board. Therefore the steps required to isolate keyboard problems are usually confined to the keyboard, its connecting cable, and the...

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Troubleshooting Problems With Facebook

The origin of Facebook, Initially known as thefacebook, Mark Zuckerberg founded Facebook while studying at Stanford University along with collage mates Eduardo Saverin, Dustin Moskovitz, and Chris Hughes on Feb 4, 2004. The controversy around Facebook started quickly.  A week after he released...

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Exchanging the System Board

If possible, back up the contents of the systems hard drive to some other media before removing the system board. Also, record the CMOS configuration settings, along with the settings of all jumpers and switches, before exchanging the system board. Remove the video and disk drive controller cards...

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Motherboard Hardware Checks

If the systems CMOS configuration setup appears to be correct and a system board hardware problem is suspected, you probably need to exchange the system board for working unit. However, a few items are worth checking before doing so. Check the system board for signs of physical problems, such as...

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Motherboard Software Checks

Boot up the system and start the selected diagnostic program if possible. Try to use a diagnostic program that deals with the system board components. It should include memory, microprocessor, interrupt, and DMA tests. Run the programs system board tests function and perform the equivalent of the...

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Motherboard Configuration Checks

Observe the boot-up RAM count to see that it is correct for the amount of physical RAM actually installed in the system. If not, swap RAM devices around to see whether the count changes. Use logical rotation of the RAM devices to locate the defective part. Normally, the only time a configuration...

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SYSTEM BOARD SYMPTOMS

So much of the systems operation is based on the system board that it can have several different types of symptoms. Typically symptoms associated with system board hardware failures include the following: * The On/Off indicator lights are visible, the display is visible on the monitor screen, but...

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System Board Problems

Problems related to the system board can be difficult to solve because of the system boards relative complexity. So many system functions rely at least partially on the system board that certain symptoms can be masked by other symptoms. Begin by observing the symptoms produced by boot...

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Power Supply Problems

If the front panel lights are on and the power supply fan is running, but no other system action is occurring, you should consider the power supply as one of the most likely sources of such a problem. The presence of the lights and the fan operation indicate that power is reaching the system and...

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Checking a Dead System

Special consideration must be taken when a system is inoperable. In a totally inoperable system, there are no symptoms to give clues where to begin the isolated process. In addition, it is impossible to use troubleshooting software or other system aids to help isolated the problem. The following...

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Desktop Power Supply Problems

Typical Symptoms associated with power-supply failures include the following: * No indicator lights visible, with no disk drive action, and no display onscreen. Nothing works; the system is dead. * The On/Off indicator lights are visible, but there is no disk drive action and no display on the monitor...

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