I have a Core i7 4770 on a Gibabyte GA-B85M-DS3H. For about a month now, every time I turn it off, or loose power, it won't POST. Sometimes it won't come back from sleep either. Fix is random. Unplugging the PSU sometimes work Removing one of the ram stick (It has 2 8gb modules). I can put back the 2nd module afterwards. Moving the ram to different slots. Reseating the videocard. Removing the CMOS battery. Reinstalling the CPU All of the above... I've tested everything but the mobo/cpu on a different PC and it all works. Also tried different ram modules. It all points to the MB IMO but I'd want to rule out the CPU. The system is completely stable other than the power up issue. Any suggestions?