So as some of you know, I recently built (with some great help from Phillpower2) my fiancè a new gaming rig . I tested this computer for over 48 hours before we took it to her house and it ran flawlessly. But, the last few days she's been having major problems with it. While playing on Star Wars: The Old Republic or Second Life the games crash. She can play for an hour sometimes with-out a crash, but they usually happen every 5 to 10 minutes. When they crash, they usually just crash to desktop. Then she will just reload the game and play again for another few minutes until they crash again. But a few times she has actually crashed to blue screen. Her graphics drivers are up to date along with all her Windows updates.
I've had her run DXdiag, but that didn't show any errors. Also had her monitor the CPU temp; it stayed under 60oC. The next step I was thinking of doing, is swapping out her GPU for one of my old ones to see if it fixes the issue. But until I can get over to her house, is there anything else I can do to help her? Thank you in advance.
Here's a screenshot of her parts list: