Advanced Recovery Methods
The Advanced Recovery Methods link found in Control Panel\All Control Panel Items\Recovery will help you recover your system to a usable state. There are two methods:-
The first method recovers your system from a previously saved image. If your last image backup is old, then you need to perform a backup of your files prior to the recovery process. However, this utility allows you to do that during its execution. If you have never performed a backup image then, this option is useless.
The second method reinstalls windows from the original installation media. Again, the process allows you to back up your files before the actual installation. If you have opted for this option then you might use a pre-build system image from your hardware manufacturer that makes life easier and speeds up the installation.
Note, that restoring from a backed up system image is not the same as doing a system restore.