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How to Fix an “Invalid Partition Table” in Windows Vista & 7

Invalid Partition TableIf you start-up Windows only to find a black screen that says “Invalid Partition Table”, aside from spending Hundreds of dollars on hiring a professional tech to repair or reinstall Windows, your only option is repairing/recovering your existing copy of Windows yourself.

There are a few options for fixing an invalid partition table. One option is to simply power the computer completely down, then turn it back on. Another option would be to format and reinstall Windows. Both of these options sometimes will work, but if not, we have another solution that usually will fix this problem for good. If this solution doesn’t work, this could mean that your hard drive may have failed, or Windows may just be too far gone.

With these instructions, you will be able to recover a damaged or Invalid Partition Table. It provides you with the commands necessary for repairing your Invalid Partition Table.

Instructions

  1. Disconnect or remove all removable or external drives.
  2. Restart the computer.
  3. Wait for the BIOS status screen to appear. This will either be the logo of the computer manufacturer (such as Dell) or a black screen with white letters with many technical details.
  4. Press and hold the “F8” key as soon as the BIOS screen disappears. This will take you to the Windows “Advanced Boot Options” menu.
  5. Select “Repair Your Computer.” The Windows 7 Recovery Environment will load.
  6. Select your keyboard layout from the drop-down box.
  7. Log in using an administrator account, if necessary. The “System Recovery Options” windows will appear.
  8. Click “Command Prompt.”
  9. Type “bootrec /fixmbr” without quotation marks.
  10. Wait for the process to finish and restart the computer to see if it worked. If it did not work, repeat steps 2 through 8, then continue to the next step.
  11. Type “bootrec /fixboot” without quotation marks at the command prompt.
  12. Wait for the process to finish and restart the computer to see if it worked. If it did not work, repeat steps 2 through 8, then continue to the next step.
  13. Type “bootrec /RebuildBcd” without quotation marks at the command prompt. If this is not successful, it’s likely that the disk is not recoverable and you will have to format the disk and reinstall the operating system.

NOTE: If the “Repair Your Computer” option is not available, you will need to boot from a Windows 7 Installation Disc, Windows 7 System Recovery Disc, or obtain a Windows 7 disc from the computer’s manufacturer.

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