400 watt antec psu, known perfect condition
abit vt7 chipset via apollo pt880
crucial 256x2 DDR ram (total 512MB, identical pc3200 sticks, single/dual channel, same problem)
xp pro service pack 2
nvidia geforce4 mx 440 (microsoft drivers... eww)
western digital 80gb 7200rpm
pentium 4 2.4GHz socket 478
the computer randomly hard reboots
so i tried adjusting the voltages on the ram, using different ram slots, single/dual channeling the ram, and even just using one stick of ram, then the other, to no avail. so i ran a ram check and it comes up with errors on the ram if run for 8+ hours, which im sure is not good, but in my personal machine the ram ran without any problems (did not run ram test, computer runs stable though)
so TWICE when the computer was starting up now its gone to the windows xp loading screen, but in like 8 bit color and freezes on that screen, but if i leave it like that, you hear the default windows boot sound shortly thereafter, like the video card is just not transmitting the data it gets from the rest of the comp.
the computer is spyware free, and i've even tried a format to see if it would solve the problem... well it didnt. im led to believe that the temps are ok. i cant imagine the ram overheating at stock voltages, the processor is decent via the bios monitor, leaving just the vid card in question. but this happens whether the side cover is open or not on the computer, and regardless of the temp in the house. but i've noticed that the computer restarts more frequently if you are listening to music, or watching an avi file of high quality, but this is not required to do it, it will sometimes reboot when idle.
if anyone can shed some insight into this please let me know