has anyone had issues with power down failure on this mother board? new PC build for a buddy of mine and during post it powers off and sometimes I get to load my bootabled usb to install windows and powers off yet again. It even powered off while messing around with the BIOS. I changed the power supply and same issue, also swapped memory and unplugged the CASE power switch from mobo and used internal power switch and no luck. Unplugged all drives except the SSD and yet again it powered off .. I'm assuming the motherboard is defective because I don't see the CPU causing this issue.