Thank you for that information.
Click the power button on your Start Menu
Press the Shift Key and click Restart
Your PC will boot into the Windows Recovery Environment
Go to Troubleshoot - Advanced Options - Command Prompt
Type this command and press Enter:
chkdsk C: /f /r
Wait for that command to complete, run this command 3 times, one at a time.
chkntfs /x c:
Type this command and press Enter:
fsutil dirty query c:
What is returned from that command?