Rampage III Extreme not accepting Bios changes to boot drive. It boots up normally but when you open any file or any program including the Control Panel It flashes a Blue Screen of Death for a fraction of a second (not long enough to read anything) then the PC shuts down and powers off automatically. I change the Bios settings to boot my o.s. from another drive on the machine or the USB flash drive but the machine still boots from the C drive. Please help!