So I have been running an i5 on a gigabyte h87 d3h wit a 760 GeForce graohics card and a 550w power supply along with 2 8gb ram and 2 4gb ram. A couple weeks ago in the middle of game play my computer shut itself off. When I tried to reboot it would just restart continously. I found that one of my ram cards was messed up causing this issue now when I try to boot it Says no Bootable device found and I can't seem to figure out in bios what it could be. It has windows 8 on the harddrive. I have it sitting with on ram stick and no graohics car or anything extra just to try and get it to work any help would be amazing as I am a streamer lol