I was getting this same blue screen error message whenever I tried to quit Elder Scrolls IV: Oblivion. The updating drivers and reinstalling the mouse drivers didn't work either. This is a new computer so I didn't think it was a ram issue. (At least I hoped not)
I looked around more and came across this Microsoft Hotfix
http://support.microsoft.com/kb/929338
And, sure enough, this fixed it. I've exited Oblivion now 7 or 8 times and it hasn't bluescreen'd me yet.
I'll post on here again if I start getting the BSOD again, but so far it looks fine.
NOTE: This hotfix works on Windows XP with SP2 (Home and Pro editions)
However, I have XP Media Center Edition and it worked for me.