Ok guys i build my rig about 2 months ago and i jus install a gpu to it about 1 month ago, yesterdey i was playing tombraider and the pc just restarted out of no were now everytime i turn on my pc the screen goes black like it get no signal for about 2 minutes after the win logo and then goes to desktop any help with this please i dont know wat to do also in motherboard i get code A0