I finally got my computer all put together, reset CMOS, set my boot sequence and installed Windows 7 64bit. Everything went great, except now I can't enter the BIOS to do any tweaking. I press DEL nothing happens, Windows continues to boot up. In fact Windows boots up no matter what button I press. I have an MSI 770-G45 mainboard. Anyone have an idea what is happening? Or Do I need to reset the CMOS and enter BIOS again like the first time?