Windows 10: sfc /scannow not working despite there's error/bugs

Since few days ago I'm encountering a weird bug. When I press Ctrl-Alt key, the shortcut key leads Ctrl-Alt-Del combo keys. Thus, when I press Ctrl-Alt, the screen turned to the blue screen.


I've been working on Windows 10 for longs years. This is first time I got this bug. I searched Twitter and google but it seemed anyone had not this bug. I also checked some software installed, working on background. but I didn't install any suspicious software recently and the background items also seemed ok. Furthermore, I checked reproduction of this bug after startup of Windows 10 without any additional background apps, software, few hours ago. So, I think this is definitely sort of Windows-system related bug.


Also, I noticed after restarting the PC, you know usually WIndows will be launch automatically, but in this these days BIOS screen will be launch instead of Windows. I am not sure this bug is also related to the bug or not, but this is also annoying.


I googled and I noticed there's solving solution, by commanding `dism.exe /online /clenaup-image /restorehealth` and `sfc /scannow`. So I did that.

`dism.exe /online /clenaup-image /restorehealth` showed me following result. As you can see, it seems there are lots of errors. I wanted to solve those issue immediately.


```

Deployment Image Servicing and Management tool

Version: 10.0.18362.1

Image Version: 10.0.18363.657

Error: 87

The clenaup-image option is unknown.

For more information, refer to the help by running DISM.exe /?.

The DISM log file can be found at C:\WINDOWS\Logs\DISM\dism.log

```


Then I tried `sfc /scannow`. Following is the result.


```

Beginning system scan. This process will take some time.

Beginning verification phase of system scan.

Verification 100% complete.

Windows Resource Protection did not find any integrity violations.

```


Kidding me? I have no idea why no issue.

So, this is my question. How can I solve this problems, shortcut key issue and Windows error issue? Thanks in advance.

:)

 

SFC scannow not working but verify only is working

there is no problem in chkdsk I've checked When I select command prompt and sfc scannow from f8 and repair.. it shows that a reboot is required for pending repair and pending renames folder in winsxs is full of files.. what should I do??

 

sfc /scannow errors


Important thing to remember is that the SFC / SCANNOW cannot always fix all errors at once. It is quite often required to run SFC /SCANNOW several times.

I have often had a situation that only a third, fourth or fifth run has finally reported "No more errors".

This is how it should be done:

• SFC / SCANNOW
• If SFC reports not all errors were fixed, reboot and run it again
• SFC / SCANNOW
• If SFC again reports not all errors were fixed, reboot and run it again
• And so on

Screenshot from the TenForums SFC tutorial:

 

SFC /SCANNOW Errors After Update


I've just updated a Windows 8.1 Pro PC to Windows 10 using the Techbench ISO which updated without any problems. However, I've just run sfc /scannow and it found errors it could not repair. I have managed to get sfc /scannow to run without errors - see what I did below:

1. Ran sfc /scannow which showed error "Windows Resource Protection found corrupt files but was unable to fix some of them."
2. Ran Dism /Online /Cleanup-Image /ScanHealth which reported "The component store is repairable."
3. Ran Dism /Online /Cleanup-Image /RestoreHealth which failed with Error: 0x800f081f "The source files could not be found.Use the "Source" option to specify the location of the files that are required to restore the feature."
4. Mounted the W10 Techbench ISO and ran Dism /Online /Cleanup-Image /RestoreHealth /source:wim:G:\sources\install.wim:1 /limitaccess which reported successfully "The restore operation completed successfully."
5. Ran sfc /scannow wich completed successfully with report "Windows Resource Protection found corrupt files and successfully repaired them."

Please advise:

1. Why would sfc /scannow fail on a newly updated installation which ran sfc /scannow error free immediately before the upgrade?
2. Why did I have to use install.wim from the Techbench ISO at step 4 above for Dism /Online /Cleanup-Image /RestoreHealth to work and will I have to use install.wim from the Techbench ISO every time I need to run this Dism command?
3. How can I configure my PC so it has the correct install.wim file for the Dism command to work properly?