After running chkdsk /r Report any messages you receive.
- Open Start.
- Search for Command Prompt, right-click the top result, and select the Run as administrator option.
- Type the following command to perform a quick check and press Enter: DISM /Online /Cleanup-Image /RestoreHealth <----Changed from CheckHealth to RestoreHealth
Once that is finished Report back any message that you receive. Keep the elevated(Administrator) command window open and in it type
sfc /scannow and hit Enter.
Let us know of any messages.