If your computer no longer loads Windows, then a startup repair may fix your boot process and allow Windows to load again.
In the BIOS menu, navigate to the Boot submenu. Select CD/DVD or Optical Drive as the 1st boot device. Save your changes and exit the menu. Your computer will automatically restart.
The program will take a moment to search for your Windows installation. Select your installation from the list and click Next. For most users, there will only be one installation listed.
Remove any flash drives or external hard drives, or Startup Repair may not function properly. Your computer may reboot several times. Do not boot from the CD while this is happening, or you will have to start the process over again.
If Windows will not load, follow steps 2-4 in the previous section to enter the System Recovery Options. From there, select System Restore. If you can log in to Windows, click the Start button. Select All Programs, then Accessories. Select System Tools and then click the System Restore icon.
System restore will not recover deleted files.
Note: Not all versions of Windows 7 have this feature, but its a good checking point for troubleshooting. You can try to access your command prompt from the recovery console to fix things on your PC that just could not be fixed through typical methods. In this case we will be fixing the MBR (Master Boot Record).
bootrec /rebuildbcd Press Enter.
bootrec /fixmbr Press Enter.
bootrec /fixboot Press Enter. This should take care of any MBR Problems that may arise. Again, this isn’t included in all versions and variations of Windows 7.
