Solution 1. Perform an Automatic Startup Repair
1) Boot from the Windows 10, 8 or 7 USB or DVD bootable media.
2) Click "Repair your computer".
3) Click "Advanced Options".
4) Click "Troubleshoot".
5) Click "Startup repair".
6) Follow the onscreen instruction.
Solution 2. Perform a Startup Repair Using Command
1) Boot from the Windows 10, 8 or 7 USB or DVD bootable media.
2) Click "Repair your computer".
3) Click "Advanced Options".
4) Click "Troubleshoot" and then "Command Prompt".
5) Call these commands:
bootrec /fixmbr
bootrec /fixboot
bootrec /rebuildbcd
