Have a Windows 7 Professional 64-bit Dell Vostro laptop - user claims he opened an email then his computer crashed. If you try to boot machine it gets to the dell screen with F2 and F12 options but when it goes to boot to Windows screen it restarts. I can boot to a Hiren's disc and select "boot from hard drive" and it will boot into Windows 7 that way. I need to fix this but don't know what to do. THanks in advance.