Hey all. This is my first real computer problem.. I have been running the same setup for about 7 months perfectly stable with no problems... Life was good. Then my computer decided to start rebooting itself. I am running a Biostar M7VIB (KT266), AthlonXP 1600, 512MB PC2100 DDR, Inno3d GeForce 2 Ti, onboard audio, Maxtor 40 GB (not sure of model), Maxtor 6.4 GB (again model?), Lite-on CDR drive 241040b, Windows XP Pro, etc... The problems started and I did the first things in troubleshooting. I updated ALL hardware drivers to the latest versions and even updated my BIOS. That didn't help, the computer still rebooted. So I tracked the problem. It seemed to do it mostley when I was accessing the network I am on. So I purchased a new NIC, formated the HD, installed the NIC and then reinstalled Windows XP. That didn't help either. It rebooted while it was loading my profile! So the network theory went out the window. Now I am thinking that it is processor, mother board, RAM..... Any ideas, related stories, tips on how to pinpoint this? I have pretty good knowledge of computers, but this is baffeling me.