If you cannot get into the BIOS (remember, the computer needs to boot), clear the CMOS. your manual will tell you how.
so I unplugged everything removed the cmos battery and pushed the reset button on the motherboard and now I am just getting a black screen. I pulled a video card out of another computer and still nothing except black screen. I tested my monitor and it is still displaying fine on another pc too. So I am now thinking something has gone wrong with my motherboard.