So i have my ASUS Sabertooth p67 REV-B motherboard, and a few hours ago it went dead, well not completely i can still acces the BIOS menu, but i can't get the HDD nor the SSD to work with it, both work with another computer I've tried all the SATA cables, SATA ports and HDD's with Windows 7 i have. is this a common problem? there was no sign of it going dead, i just started giving me "BOOTMGR is missing" i have tried to re-install windows on a different computer but i then get "Boot device is missing"