My computer screen keeps turning off - signal cut. My computer remains running but when I press caps locks or num lock none of the lights on my keyboard turn on like they should if the computer was actually running. I thought it was a video driver for my A10-5800k was cutting out at first but upon updating my video driver but I updated to the latest 12.10 drivers and the problem persists. I can be running my system for hours at a time then all of a sudden the video feed gets cut off but my computer continues to run. If I press the restart button my computer doesn't reboot but if I shut it down completely then turn it back on it boots. Any ideas on what the issue could be?? Power Supply? I have a 550W Modular Antec that is 80 PLUS certified. It's less than 2 months old.