I still run into a situation every once in a while where Windows 7 does not run a chkdsk properly.
Chkdsk (Chkdsk.exe) is a command-line tool that checks your harddrive for problems. The tool then tries to repair any that it finds. For example, Chkdsk can repair problems related to bad sectors (although it will not fix a bad sector), lost clusters, cross-linked files, and directory errors. To use Chkdsk, you must log on as an administrator or as a member of the Administrators group in Windows 7 or Windows Vista, which is accomplished by clicking START and typing CMD in the search box at the bottom. CMD will then appear in the top of the START MENU, where you can right click it, and choose RUN AS ADMINISTRATOR.
CHKDSK should be a part of your monthly maintenance–it can sometimes head off serious problems that might prevent your computer from starting.
Anyway, back to Windows 7 and the mystery of the “WHY THE FRIG DOESN’T CHKDSK RUN?!?”