If you have the installation disk you can try the following.
If your computer's system is severely damaged and you can't access the System Recovery Options menu on your computer, you can access it using the Windows 7 installation disc or a USB flash drive, or using a system repair disc if you created one earlier.
To use this method, you need to restart (boot) your computer using the disc or USB flash drive.
1. Insert the Windows 7 installation disc or USB flash drive, or a system repair disc, and then shut down your computer.
2. Restart your computer using the computer's power button.
3. When prompted, press any key, and then follow the instructions that appear.
4. On the Install Windows page, or on the System Recovery Options page, choose your language and other preferences, and then click Next.
*If neither the Install Windows page nor the System Recovery Options page appear, and you're not asked to press any key, you might need to change some system settings. To learn how to do this, see Start your computer from a Windows 7 installation disc or USB flash drive.
5. If you are using the Windows installation disc or USB flash drive, click Repair your computer.
6. Select the Windows installation you want to repair, and then click Next.
7. On the System Recovery Options menu, click a tool to open it.
Edited by dc3, 03 December 2010 - 10:45 AM.