Tips for Troubleshooting
Scandisk is what you run to try to fix your file system, when something is wrong. But it sometimes does not fix it. When that happens try the following:

One of the best ways to find out what is wrong with the computer, is to run Scandisk with the check mark removed from the fix automatically box. Once that is done, go to My computer and open it up. Click on C drive, and open the file named Scandisk.log  It will tell you what is wrong.

The best way to stay out of trouble is to scan everything with an Antivirus program. If you are having problems, this link will take you to free tech support.
                                                                   CNET Help.com

If, you are ready to hit the try out one of these Message boards. They can find ways to help you out with your problem.
There are several good Message Boards out there that offer help with your system

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