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If you can get the system up for more than a few minutes or can use safe mode, try removing the last installed software application or driver.

For removal of an application (Windows 8+)

1. Press the Windows Key and X together, then  Control Panel, then Programs and Features.
2. Select the software to uninstall and select Uninstall.

 For removal of an application (Windows 7 & Vista):

1. Click on Start, Control Panel, then Programs and Features.
2. Select the software to uninstall and select Uninstall.

For removal of an application (Windows XP):

1. Click on Start, Control Panel, then Add or Remove Programs.
2. Select the software to uninstall and select Remove.

To disable a driver:

1. Bring up the system information dialog:

   On the keyboard, press the Windows key + Pause/Break.

      or

   Select Start, right click Computer and on the drop-down, select Properties.

2. Click on the left side option Advanced system settings (7/Vista only).
3. In System Properties, select the Hardware tab, then click on Device Manager button.
4. Find the hardware/driver of interest (you may need to expand a choice at the "plus" graphic) and double click the choice.
5. Select the Driver tab. Here you can perform a number of actions such as update the driver, roll Back the driver to an older version, disable or uninstall the driver.
6. Click OK to exit, then close the Device Manager and other previously opened dialogs.

You may have a defective memory. This is even more likely if it only occurs when the system is cold or hot, but not all the time. Use a memory tester to confirm if it is defective or if you have spare memory, try replacement.

Windows 7 and Vista include a Memory Test program when booting from the Windows Installation DVD. Step-by-step instructions with screen shots are available at Using System Restore on 7/Vista/2008 as part of System Recovery.

Several software products that also provide memory and video diagnostics includes Fix-It Utilities Professional and SystemSuite Professional. Other diagnostic products include Eurosoft's PC Check and Iolo's System Mechanic.

Additional Memory Solutions:

• Confirm all the memory is of the same type and speed. Many motherboards only work correctly when the memory is installed with matched sets and matched speeds.
• If you added or changed your memory just before this problem occurred, try reverting to the prior memory configuration to confirm it's the source of the problem.
• Check that the memory is fully seated in the sockets. Memory sockets often have side latches that need to be upright to indicate the memory is correctly locked in place.
• Confirm the memory resides in the correct slots on the motherboard. You'll need to refer to the motherboard manual to confirm this. There is little consistency, even within a single vendor. Some systems require that memory is installed as matched pairs, but not always adjacent to each other!
• It's also possible the memory problem is on the video card, as they often contain additional memory. The video card should be tested and/or try a different video card to see if the problem goes away.

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