Have you performed a checkdsk scan on your hard drive confirm that there is not a hardware failure at fault here? Also, Microsoft does have an official Windows 7 Support Forum located here http://social.technet.microsoft.com/Forums/en-US/category/w7itpro/.
It is supported by product specialists as well as engineers and support teams. You may want to also check the threads available there for additional assistance and guidance.
Microsoft Windows Client Team