⇒ As a first step try to Boot the computer in the SAFE MODE. Turn off your computer, and turn it on backup then tap F8 continuously to get the windows advanced boot option, here you can see the SAFE MODE & SAFE MODE WITH NETWORKING.
⇒ After you booted to the SAFE MODE or SAFE MODE WITH COMMAND PROMPT and try to restore the system. type this command rstrui.exe
⇒ If the above two didn't work means, better you try the “repair your computer” option will help you. In order to do that, first insert your OS disk into your machine and restart it, below the ‘install OS” you can find option says “repair your computer”.