Hi, so basically my pc turns on for a short amount of time, from 5 seconds of power to maybe 20. all this time it has no display, so i cant really do much of anything, no boot up sequence, nothing. I have a Raidmax winterfall fulltower, asrock extreme3 mobo, 2x GTX 770's ACX SC. w/LCS on Cpu. 240mm rad. and strobe light in case. All lights come on, every fan works. I tried 3 different harddrives, swapped the ram in and out. Jumped the bios, popped the battery, removed both gpus to try mobos output-didnt work. I have two psu's i tried, both seem to work fine. Azza 800 watt 80 plus and EVGA 850 supernova G2. The nova had it working till i shut it down and tried adding a harddrive, then all hell went loose. any advice?