The command we will use, bootsect.exe, is in a folder (named boot) on the DVD.
We need to know what drive letter has been assigned the DVD drive to access the folder.
Type: diskpart and press Enter Type: select disk 0 (zero) and press Enter type: list volume and press Enter
7. Use your DVD drive letter and
Type: exit and press Enter to close Diskpart Type: G: (use the letter of your DVD drive) and press Enter Type: cd boot and press Enter Type: dir and press Enter
8. To restore the "bootsector code":
TYPE: bootsect /nt60 SYS /mbr and press Enter
NOTE: If this method fails to restore the MBR, you can try the bootrec command as it is also a tool for repairing the MBR.9. When completed successfully,
Type: exit and press Enter
This will close the command prompt window.10. Now select Shut Down or Restart