My hard drive got mess up by my unpluginh computer from power

Depends on how messed up it is. Is it just not booting, or is the drive not spinning up. I would think that the drive is still good, but you may have corrupted windows. You may be able to repair windows, and you can plug the drive in as a second drive in a system, and you should be able to pull any files from it, and then put ti back in your system and reload windows.