Windows 7 - Account not showing up on login screen

Today I was trying to log in to my computer after a restart. The computer booted and the screen with the Windows 7 Ultimate logo appeared. However, it does not have the username/password box, so I can't log in. The screen is also refreshing (turning black for a second and coming on again) but it is still blank. I tried booting in Safe Mode, but the same problem occurs. Any ideas?

I built the computer 3 years ago, and it hasn't had any problems. It has an AMD 4990 processor with an Asus motherboard (not sure what kind).

Hello !! Welcome to SF !!

Run Startup Repair make sure you run it atleast 4 to 5 times. Follow this Tutorial for more help on how to run it Startup Repair

- Captain

Thanks! It didn't work but using System Restore in the menu did work.

Good !! The would be my next suggestion !!

- Captain