So ive been runing vista 64 for about 6 months and loving it, averaging 60-70 fps on my machine, but people swear left and right that XP averaged about 10-20 fps more because of the less memory intensive nature.

So i decide what the hell, i have a 300 gb HD ill do dual boot XP and vista right?  So to be safe i back up everything on my hd (programs etcs, just not the OS files).  I put XP on for dual boot and after a painstaking 2 hours i get it in dual boot, select  xp and boot, try it out and its ok but i really didnt notice any difference, so i go back to boot in vista and got a new error.

Display driver nvlddmkm.sys has stopped responding but recovered. 

So i sit on the phone with vista help for about 3 hours and they just give up and say my video card went bad.  I remove XP, do a 100% fresh/clean install of vista and get the error again.  Anyone else find a work around for this?  Cause i find it hard to beleive a 3 month old 8800 gtx is the issue.