My computer shut itself down and when I tried to reboot it, it froze on the start up Asus screen and won't let me enter the bios settings by pressing f2 and won't go past that screen. It sounds like it's loading as normal and I can hear it running it just won't do anything. A comment I read said that windows 7 may have not installed itself properly and this is why it has frozen and has said to download windows 7 on the hard drive again, but I want to know how you do that if the screen is frozen??