Thanks for the ideas,
I have checked the cpu, seems to be running at a reasonable temp, i was concerned about that because when i replaced the mboard i never put new thermal gel on the cpu, but that doenst seem to be causing the problem (the other 3 were put back together the same way and work fine)
How would a ram slot go bad all of the sudden? if i put a stick of ram in improperly, it wouldnt work right off the bat, right? this ran for a few weeks then crapped out.. I guess my next move is to take the ram out of this machine and put it in another and see what happens. If it works in the other machine i will have to then try taking out the supposed bad mboard and swap it and see if that works. then its time to get a new board.. any more thoughts are welcome.
And no, i am not an acer fan at all.