Posted 06 December 2009 - 02:21 AM
I have an issue with my computer randomly restarting and I need help finding the root cause.
So far I have replaced the power supply, motherboard and the hard drive.
I have scanned the memory using memtest86, passed.
I do not sense any overheating of components on the motherboard or video card.
I suspect the culprit is the video card but I am not convinced as swapping with an older video card produces similar restarts. However, it should be noted that the older video card does not work well in general (fuzzy lines). Uninstalling video card drivers also does not help - still restarts randomly.
Motherboard BIOS is up-to-date and latest chipset drivers are installed.
Automatic restarts are disabled in XP. No BSODs before restarts. Event viewer used to show 'disk error' before I had replaced the hard disk. The restarts did not go away after replacement.
I have an Asus P4P800 motherboard with a P4 2.8ghz processor, and swapped it with an ECS 848p-a with a 3.0ghz processor, to see if that was the cause but still restarts. Also, should mention that I swapped the Asus with a used ECS mobo, also possibly defective.
Running Windows XP Pro SP3 on:
ECS 848P-A mobo, P4 3 Ghz, 2.0 GB Ram, ECS 848P-A mobo with a new 750 watt PSU (ultra lsp750), Sapphire Radeon HD2600Pro 512 MB video card, western digital caviar 1tb hd
I am pretty much running out of things to test/change without buying new replacement components. Please feel free to shed some expertise.