I recently purchased an r7 250 so I could run it in dual graphics with my a10-7850k, but whenever I play a game (alien isolation) for about 5 or 10 minutes the computer shuts off, leaving me with a black screen. I am running my gpu and cpu at stock speed and my CPU temps are well below 50 degrees while playing. I am using a cooler master hyper t4 cooler. I am also using a corsair 500w power supply (CX500M).