I have been working on this problem for many days now and I think I have eliminated any problem but a possible CPU or Motherboard problem. Over the past couple months, I have been seeing my monitor flicker from normal to "fuzzy" mode (vertical lines through the screen). I thought this might be the vid card starting to go. Then I started getting an occasional daily freeze. I have not formatted my Win2k system for over 2 years so maybe I was due for a reinstall. Anyway, I put XP on my system and since doing that the system freezes 15 times each morning until eventually I could use it. It would slowly progress a bit further each time I reset it. I thought that the problem might be with the AGP440.sys in XP so I went back to Win2k. While trying to install win2k I got a freeze up. So I went and replaced the vid card with a new one. It didn't fix the problem. Then I thought it was the power supply going bad so I went and replaced that. I had a Silencer 275W and moved to an Antec 400W. Still, that didn't fix it. So I pulled everything off the mobo except one good memory module, my vid card, a CD drive and my formatted harddrive. I used Maxtors powermax to format and check the drive...it's ok. I even went as far as trying another drive and I still get the freezing. So I'm now at the point to which I think it is either the mobo or the cpu. I take good care of both, i don't over clock, and i recently took the time to clean all the dust out of the system. Still I have this freeze up whenever I startup. It freezes anytime after the mem check and after the system finds the drives all the way to the point in Win2k install where it searches for Network Components. I also cleared the CMOS and went to Fail-safe mode and that didn't help. Guesses anyone? CPU or Mobo going bad? I never hear any error beeps from the mobo and I called the SuperMicro guys about the board... they say it's the CPU or the PS. CPU? Thanks for your help.