I did a google search and I found ATI and Maya don't work to well together. Once my models got more complex I found my PC crashing more and more often. In one morning it must have crashed like 30 times! I picked up a Gforce Nvidia 6600GT and no probs since.

It's a pain I know.

My 6 year old son's PC is running a Gforce FX 5200 and no probs with Maya!

Well that's my $0.02 worth

Cheers
Paul