Abit boards are not exactly known for quality. Try using a Biostar, Asus, or MSI board next time. The only a-bit I've ever bought failed in about a year. I have Biostar and ASUS boards currently in service that are between 6-11 years old and won't die.

I recentely fixed a pc with random reboots.
Took the board out, removed CPU.
Cleaned all contacts and put it together again.
Works for a week now without rebooting.

Rob

Striped the whole thing down. I brought it into Frys and they ran their tests on the CPU/MB and found no errors. Put it all back together and the problem still persists. I think I am going to wipe out the partitions on te main HD, format it and try that. I do not understand how a software issue could cause a shut down but who knows. If that does not work I will try sing my secondary HD and install the OS on it. Just trying to eliminate the HD as the source of the problem.

I got 3 faulty ASUS boards (DOA) in a row from the factory. 4th is questionable but somewhat functional. May have been the model of the mobo, but my friend who used the same exact one had his first one DOA as well. My Asus netbook on the other hand, had a 32 inch CRT tv fall directly on it, and all it needed was a new screen :confused:

I've had the best luck so far with Biostar boards. Only 1 failure out of probably 40+ that I have built.

Curious that you did not blue-screen.

My initial thought was heat since I started having similar problems when the weather got warm and my computer was flat on the desk. Tilting it up so heat could dissipate solved that problem.

The only non-blue screen shutdown I have experienced was when I upgraded my RAM and did not seat the new ones properly -- but that happened immediately. Is is possible one of your modules be seated properly while the other(s) is/are not?

I don't think so. Had memory out when I striped it down. When I put everything back in I was careful to make sure everything felt solid when I put it back together.

The tower has 34 fans. One on the side panel, one back one front one on the CPU and it is in a well vented cuby in my desk (no rear obstruction, 4" on the side and 3" on top and open at front.

My bet is that the motherboard is shot. Time to claim warranty.

Tried that. went to Frys and they ran test ton MB but were unable to detect any issues wit it. If they cannot reproduce it, they wont do anything.