How to repair the Master Boot Record in Windows Vista. If you are having trouble getting Windows Vista to startup due to a corrupted Master Boot Record, you can use the Windows Recovery Tools to restore it. To do this, perform the following steps:
- Start your computer using the Windows Vista installation disc.
- Choose Repair your computer from the main screen.
- Choose the operating system you wish to repair and click Next.
- Click Command Prompt on the next screen.
- At the command prompt, type bootrec.exe /fixmbr.
- A message should appear stating The operation completed successfully.
Try to start your computer again and pray it will fix the issue.