I guess ATI is no longer updating drivers for the X series cards. The version they have is for Vista. I don't know... Sometimes I can hear my fan pretty loud when I'm playing. Maybe this is overheating?
The only correct way to identify a thermal problem is though using a thermal monitoring utility. The Omega Drivers do include the high end of the Xn00 graphics cards. AMD had extended support of the X850, only, into relatively recent drivers, omitting the X700 and X800 cards, but the guy who supports gamers by offering modified drivers still has what is needed for those. (
Note:
Any cards less capable than an X700 aren't worth the time writing about them any more.)
Since any Crash to Desktop is still a crash, same as a BSOD is a crash, although of the OS, not just the game, it is my opinion that both situations are inter-related, and creating a new message thread is / was a mistake.
http://http://www.gamesas.com/index.php?/topic/1147163-blue-screen-crash/