...as the other posts about this issue? See the links below:

http://reviews.cnet.com/5208-6122-0.html?forumID=44&threadID=56954&messageID=676471

http://reviews.cnet.com/5208-6122-0.html?forumID=44&threadID=61795&messageID=732853

If that's the case, then you need to start trouble-shooting your machine. Temporarily disable ALL running programs when using the games...Try a different video card with more RAM...Since heat damage over time can cause issues, it may be time to try a new motherboard...(You mentioned that it was an old machine but had updated memory, etc.)

Hope this helps.

Grif