I need to change the boot order of my pc to reinstall windows 7 from my flash drive, already have the service pack and OS, but when I try to load bios to change the boot order of my pc, the bios will not load, it automatically starts up, even after I press F10, or F8, or ESC. I understand that I can also change the boot order from the Device Manager? PC also won't complete a restore point, or choose default settings. Is this due to trying to reinstall windows and not formatting my hard drive?