This is a step by step tutorial or a beginner’s guide to How to rebuild BCD (Boot Configuration DATA) and rebuild MBR (Master Boot Record) in Windows 10 & Windows 8 | 8.1.
Rebuilding BCD | Boot configuration data | MBR
To check & rebuild the Windows BCD:
- If you are able to access lock screen on Windows, Press & keep holding the shift key & click on Restart to open Windows Recovery Environment (WinRE)
- If not,
- Insert the original Windows DVD/USB and boot from it
- You can also use Windows Recovery Media
- Select your Language & keyboard options
- Click Next
- Click on Repair your computer
- Click Troubleshoot
- Click on Advanced Options
- Click on Command Prompt
- Now,
- Type bootrec /fixmbr
- Press Enter
- Then,
- Type bootrec /fixboot
- Press Enter
- Then,
- Type bootrec /rebuildbcd
- Press Enter
- Now, Type Exit
- Restart your computer