Hi guys I recently bought a new Asus AMD Radeion HD 7750 Graphics Card with 1GB DDR5 (http://www.asus.com/Graphics_Cards/HD7750DCSL1GD5/) for my Dell Inspiron 560 Desktop. Everything worked fine during setup and the computer downloaded all the drivers successfully. The computer performs well with the card, however, after anywhere from me playing games for 15 minutes to a couple hours the computer freezes and starts playing the last sound I heard over and over again. It doesn't go to black screen but stays at the screen I was looking at before it froze. Is this due to the Graphics Card overheating, not enough power to supply the card, or something else?