Well don't despair. Even if there is some corruption on the disk and windows is unable to fix it, you can use recovery software to find the data. A useful cd with various utilities is Hiren's Boot CD. It has a few recovery utilities on it. One utility that works really well but isn't on that CD is R-Studio. There is a demo on their website that only recovers files up to 64 kb. It's not expensive though. However there are probably some freeware programs that work similarly. In short your problem might be relying on Windows to access a corrupted disk. You might need to use more sophisticated software. Software like R-Studio can work magic on volumes or files that seem totally unrecoverable. Even corrupted photos on flash cards, etc. It can recover a photo even when part of it is corrupted and windows or the digital camera will just choke and freeze and won't let you recover anything at all. Good luck and let us know how it goes, or if you need more help!
i guess some system file have been corrupted which needs to be repaired. I would suggest you to try free download of Stellar Phoenix Windows data recovery software at http://www.windows-data-recovery.net/
It will show you the preview of your recoverable data.
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