Entering "DISM /Online /Cleanup-image /Scanhealth" into command prompt just gives me:
C:\WINDOWS\system32>DISM /Online /Cleanup-image /Scanhealth
Deployment Image Servicing and Management tool
Version: 10.0.19041.3636
Image Version: 10.0.19045.4291
[=== 6.8% ]
Error: 1392
The file or directory is corrupted and unreadable.
The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log
Using Restorehealth yields much the same result. I then tried sfc /scannow, but it told me Windows Resource Protection could not perform the requested operation after reaching 11% verification.