If you try to run a disk check on Windows 8 or Windows 10, you will notice that the system will first perform an analysis.
Only if problems are detected will you perform a thorough check.
However, if you want to force the scheduling of the disk check ‘at startup‘ (i.e. with correction and recovery of damaged hdd sectors), you have to open a command prompt as administrator (which we find by right-clicking on the windows logo in the start menu) and run the command:
chkdsk C: /f /x /r
Enter S (or Y if the PC is in English) and press enter to confirm.
In this way the PC, at the next restart, will perform the deep scan-disk we wanted.