My PC Won't Boot Into Windows!
Try Safe Mode First
When your PC just won't boot into Windows at all, you'll probably want to start off with Safe Mode—use the F8 key right when the system starts up to access the menu and see if Windows will boot into Safe Mode. If you're able to get into Windows, the problem is likely something that would load only when you boot normally—graphics card drivers, junk applications, or perhaps some spyware applications.
Even Safe Mode Doesn't Work
If you can't even get into Safe Mode, you shoul...