Checking the Hard Disk with CHKDSK
Checking the hard disk will help solve some problems when working with the system, for example, there is a problem with fonts, which is solved by checking the disk.
1) Open "My Computer" and right-click on the drive where your application is located, by default it is drive C. Click on the "Properties" button.
2) Go to the "Tools" tab and find the "Perform verification" button, click on it.
2) Go to the "Tools" tab and find the "Perform verification" button, click on it.
3.2) In Windows 7: Turn on all the checkboxes in the window that opens and click on "Start".
4) In Windows 7: There will be a notification that the working disk cannot be checked, click on "Schedule disk check". Manually start rebooting the system, a check will occur at startup.
5) Check if the problem is gone.