Hanging around with the video card.........

I have a Nvidea 6200 LE video card, and when i put my computer into standby mode for between 4-6 hours i have problems with the card "hanging"...the error messages i get talks about a loop the card is in or something like that...what it means is if i push a key to come out of standby the computer hangs,screen goes black and then i must restart the computer...after the reboot i get a message saying the computer has recovered from a serious error......the problem does not happen all the time...i try to bring the computer out of standby and run a small non 3d program and then things seem ok....i have deleted and re-installed the card...also have the latest drivers for it...Nvidea has been less than helpful...any suggestions?  Thanks

Need to know the exact error message.

Try a different PCI-E slot if you havn't already.  Could be something going on with that controller.  Otherwise it just sounds like a faulty card.

Will post the exact error message when it happens again..........thanks........