I have a computer on my network that shuts down for no reason. If does not matter what program a person is working in or doing, the system will reset itself. When it resets itself you can see the cd-rom activate, then the hard drive, but nothing ever comes on the screen. The computer needs to set for about eight hours before it will re boot properly. I have had the Video card checked (SIS 6326 AGP true color) and according to the tech that performed the tests, the card is functioning normally. I am so frustrated right now, that I am about to take a hammer to the computer and beat it to death. If you can help me I would appreciate it.