Win 7 Home Premium will not finish booting. The splash screen just starts showing a little color, when it goes to choice of system repair or start windows normally. If normally is chosen the same choices repeat. If repair system, no solution is found. Next is an option of 7 choices to manually repair. None advance the cause.
History; bought off craigslist. Believe I may have foolishly bought a computer with illegal Windows 7 Home Premium OS. Downloaded Win 7 Home Premium iso from Microsoft link. After I installed the key previously used and Microsoft rejected it. I had one more key from a update 3 pack and it worked.
Later I decided to upgrade the BIOS, but did not BU the old BIOS. That was when the booting problem started.
Now when I try to reinstall and repair windows, wrong version error. Help