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#21
can you run a chkdsk/f on it? If you can't do it logged on to windows, try it in safe mode. Either way, It will tell you it needs to unmount the drive..allow it to do so and restart...I'm wondering if you have a bad HDD...or bad sectors on it..
Click, Start>>>Computer>>>Highlight Os/C>>>Right click>>>Properties>>>Tools>>>Error Checking, Click, Check now
or
in the start menu, type "chkdsk" in the search bar. When it shows up in the area above, you may need to right click and select "run as administrator" to get the cmd prompt to open instead of just appear for a sec. In cmd Prompt, you will need to type chkdsk/f and hit ENTER. Then y a few times. and Reboot...Depending on the Size of the hard-drive, it may pay you to....go make supper. take a (long) shower, or whatever else you migh have in mind to do, as the CHKDSK process will take some time to run.
Then see what happens...
Or you can try a different hard drive if you have one handy...and start fresh again...
These are just a few troubleshooting steps, as I don't know exactly what is causing your issue.