Hi! You can try to boot with a system repair disc. A shot in the dark?? http://www.dummies.com/how-to/content/how-to-use-a-system-repair-disc-to-restore-windows.html
Note: You need to download the system repair disc associated with your computer’s architecture (32 or 64-bit). How do I find out if my version of Windows is 32 or 64-bit?
Note: The system repair discs above are in ISO format. Learn how to burn an ISO image in Windows 7.