The solution to a damaged partition boot sector is to overwrite it with a new, properly configured one using the bootrec command.
Important: The following instructions apply to Windows 8, Windows 7, and Windows Vista. Boot sector issues also occur in Windows XP but the solution involves a different process. See How To Write a New Partition Boot Sector To a Windows XP System Partition for help.
Difficulty: Easy
Time Required: It'll take around 15 minutes to write a new partition boot sector to your Windows system partition.
Here's How:
- Start Advanced Startup Options (Windows 8) or System Recovery Options (Windows 7 & Vista).
- Open Command Prompt.
Note: The Command Prompt available from the Advanced Startup Options and System Recovery Options menus is similar to the one available from within Windows and works very similarly between operating systems. - At the prompt, type the bootrec command as shown below and then press Enter:
bootrec /fixboot
The bootrec command will write a new partition boot sector to the current system partition. Any configuration or corruption issues with the partition boot sector that might have existed are now corrected. - You should see the following message at the command line:
The operation completed successfully.
and then a blinking cursor at the prompt. - Restart your computer.
Assuming that a partition boot sector issue was the only problem, Windows should start normally now. If not, continue to troubleshoot whatever specific issue you're seeing that's preventing Windows from booting normally.
Important: Depending on how you started Advanced Startup Options or System Recovery Options, you may need to remove a disc or flash drive before restarting.
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