====== Fix MBR through command prompt ======
after selecting repair>cmd prompt, enter:
BootRec.exe /fixmbr
you can also substitue the /fixmbr with thes commands:
**/FixBoot**. Writes a boot sector onto the system partition to start Windows
**/ScanOs**. Scans all disks for Windows installations and displays them to you.
**/RebuildBcd**. Scans all disks for Windows installations and prompts you to pick the ones you want to add to the BCD.
===== Procedure for Windows 7 : =====
BootRec.exe /fixmbr
BootRec.exe /FixBoot
BootRec.exe /ScanOs
BootRec.exe /RebuildBcd