i would suggest you to go through the steps mentioned in the link and check.
A Chkdsk command fails with an unspecified error on a Windows 7-based or Windows Server 2008 R2-based computer that uses a low frequency AMD CPU
You may also use the recovery console to run checkdisk and check.
What are the system recovery options in Windows 7?
You can open command prompt and type: chkdsk/f c:
Run Check Disk from a Command Line to Check for and fix Disk Errors
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