I'm having the same issues regarding windows update failures as many documented in this forum. I have run the repairs recommended, drive scans, etc. with no success. I'm at the point that I think that it would be better to cut off the update notice. I have zipped up the files recommended and posted them on my skydrive site. That location is https://onedrive.live.com/?cid=C1221863E15FBC11&id=C1221863E15FBC11%211274.
Please help. Joe Collins