No offense taken, thx for the reply. I am definately suspecting the video card, as this build has been a good lesson on using cheaper parts. Have already flashed the newest bios, and cold boots are fine, I only experience it on warm boot. When it does lock up, not only do I have to power down, but I also have to pull the power plug from the back of comp. If I don't, it seems like the ps is holding a charge, and when I try to power back on, it comes immediately back to the state it was after the lockup ( i.e. fan/LED's on, cd-rom light on, but no other activity). Even if I wait like 20 seconds or so before powering on with the power button. I have an ATI9200 that I can try, but it's such older technology, do you think it would serve as an accurate test? BTW, are all of the newer GPU's using this on-board power connector, or is this kind of an anomaly?
Edit: The video card worked fine in my older P4 Gateway computer that I upgraded from.
P.S. What are the reputable resellers of GPU's?