try making from another pc a hirem boot cd. boot from it and run a anti virus sweep on your hard drive and smart test to see if your hard drive went south. if you know the vendor of the hard drive on the boot cd is wd and seagate drive test tools.
what is a hirem boot cd? and whats a smart test?
also, if i enter bios FIRST (even if i dont touch anything) and then exit bios, i get a windows boot screen with 2 options. Repair or start windows normally. Which ever i click, it loads completely and then stays on a black screen.