Go to start, all programs, accessories and right click on command prompt select "run as administrator" at the prompt type:-
chkdsk /r
press enter, you will receive a message about the volume being in use and would you like to run at boot Y\N press Y and reboot chkdsk will run at boot takes awhile so let it run when finished it will boot into windows you do not need to do anything.. any problem messages let us know.