WOW & Warhammer freezes, black screen

System only freezes up after playing either WOW or Warhammer for about 5 minutes. Sometimes you hear sound continuing while screen is black. Sometimes the sound will make a repetitious stuttering type of duh-duh-duh-duh sound. The only way to continue is to do a hard reboot (push the button).
Thank you for help.
DXDIAG file is too long to post, so it is attached.

 

I had a problem like this about a year ago with WOW, it would display and error stating, "Memory stuck in infinite loop". The problem was a undetected trojan. Not sure if that is your problem but I would consider it.

 

It doesn't give any message, simply the black screen, maybe sound, then hangs up totally. I have run Memtest, and it comes up clean. The system excedes the minimum requirements to play the games. As far as an undetected trojan, I have Symantec Antivirus installed, and it hasn't found anything. Any suggestions on how to find an undetected trojan? Thank you for the suggestion.

 

I recommend A-Squared Free.
http://www.emsisoft.com/en/software/free/
I use it just to double check sometimes, like I said this might not be your problem, but it does not hurt to check. Also if you have any Addons you should just delete them. If this does not help there is another option .

 

Avira is good as well, graphic card drivers updated?

 

I ran the A-Squared, found some low and medium risk stuff, no big deal. The graphic card drivers are the latest, but the latest is rather dated. My DXDiag is attached to the first message. Great card, just getting dated. Would that cause this blackout hangup thing? Also, switched to windowed mode and this time the system restarted itself completely.

 

Weird. This time in Windowed mode, Warhammer went to a brown screen just a few minutes into the game. continued hearing sound. Was able to click the "X" in the window box and end the game without having to reboot.

 

So I'm assuming deleting the medium risk stuff did nothing. So your system freezes after 5 minutes everytime? Maybe reinstalling wow and warhammer would help. I read that deleting your WTF folder fixes some problems in WOW.

 

I'm experiencing problems after 20-30min of play. I'll receive graphic annomolies and either the game will crash to desktop or the game window will freeze and I'll get a windows error that will report itself.

I'm attached the dxdiag

 

So did you just upgrade to xp sp3 and update your drivers