I built a gaming computer last January. It runs everything fine except windows 8.1 (i think) Occasionally everything will stops except my audio until my computer screen turns sky bluish and gives a error message with a big ": (" I originally thought it was my processor because i only have stock cooling, so I set it to quiet mode but nothing has changed. Whenever this happens i either turn it off and then it asks to insert a boot device, so i restart it again and it works fine without any problems. How can I fix this? Thank you.