Ive been having an issue with this board where it wont boot or post. Its gets stuck on error 15 ive also noticed that the cpu led is on. If i keep hitting the reset button it will eventually boot but once i restart it will do the same thing. Ive tested the ram and the hard drives but ive had no luck. Any ideas? My specs are asus maximus 7 formula, i7 4790k, 16 gb corsair , 2 gtx 760 in sli, evga 1000 watt psu, samsung evo 840 250 gb ssd. And a samsung 1tb hhd.