If you suspect there's any inconsistences with your Windows system files, try running through the below process.

Step 1: System File Checker

Run cmd.exe as an administrator

sfc /scannow

Check the results:

• If no corrupt files found, skip step 2.
• If corrupt files found and successfully repaired them, go to step 2.

Optional: review what files were corrupt

findstr /c:"[SR]" %windir%\logs\cbs\cbs.log >sfcdetails.txt
notepad sfcdetails.txt

Step 2: Run an online repair

DISM /Online /Cleanup-Image /RestoreHealth

Once it's done - restart computer.

Step 3: Check disk for errors

To run a CHKDSK (check disk) on the C: drive on Windows 11, you can follow these steps:

1. Open the Start menu and search for "Command Prompt"
2. Right-click on the Command Prompt app and select "Run as administrator"
3. In the Command Prompt window, type "chkdsk C: /f" and press Enter. The "/f" flag tells CHKDSK to fix any errors it finds on the drive.

Note: If the drive is in use, the command prompt will let you know that the volume is in use, and ask you whether you want to schedule the disk check the next time the computer restarts.

4. Wait for the CHKDSK process to complete. This may take some time, depending on the size of the drive and the number of errors found.

After the CHKDSK process is complete, you can review the results by checking the Event Viewer for any entries related to the CHKDSK.

1. Open the Start menu and type "Event Viewer"
2. Open the Event Viewer app
3. In the left pane, click on "Windows Logs" and then "Application"
4. Look for an event with the source "Wininit" and event ID 1001
5. Double-click on the event to view the details, which will include information about any errors found and corrected by CHKDSK.

Alternatively, you can also check the chkdsk result in the command prompt window after the chkdsk process is done.

Step 4: Diagnose memory 

To perform a memory diagnostic test on a Windows computer, follow these steps:

1. Press the Windows key + R to open the Run dialog box.
2. Type "mdsched.exe" and press Enter.
3. Select whether you want to restart your computer and run the test immediately or schedule the test for the next time you restart your computer.
4. If you choose to run the test immediately, your computer will restart and the memory diagnostic tool will begin testing your memory.
5. The test may take several minutes to complete, and your computer may appear to be unresponsive during this time.
6. After the test is complete, your computer will restart and return to the Windows desktop.
7. You can view the results of the test by opening the Event Viewer, which can be found by searching for "Event Viewer" in the Start menu.
8. The results of the test will be displayed under "Windows Logs" and "System."

Alternatively, you can use third-party memory diagnostic tool like Windows Memory Diagnostic by Microsoft, Memtest86, Memtest86+ etc.

Note: Two Anti-virus is not better than one!

More than one antivirus will cause conflict and system instability. Remove them all and stick with inbuilt security for simplicity.

Use a fix-it tool with Windows 10

Instead of fix-it tools, Windows 10 uses troubleshooters to help you solve problems with your PC. To run a troubleshooter:

1. Select Start >Settings >Update & Security >Troubleshoot, or select theFind troubleshooters shortcut at the end of this topic.

2. Select the type of troubleshooting you want to do, then selectRun the troubleshooter.

3. Allow the troubleshooter to run and then answer any questions on the screen. If you see a message that no changes or updates were necessary, you can try recovery options, or find out more aboutOutlook error codesand upgrade and installation error codes.

Find troubleshooters

Remove malware and crapware

Keeping third party software down to a minimum helps reduce potential complications. Consider removing software previously installed, that is no longer required.

Third party antivirus also causes complications compared to the native Windows Security.

If you suspect adware or potentially unwanted software installed:

Download and run Adwcleaner: https://www.malwarebytes.com/adwcleaner

Bulk uninstall crap software: https://www.bcuninstaller.com/

Clean up

Run cmd.exe as an administrator

cleanmgr /verylowdisk

Setup Storage Sense to cleanup disk regularly

1. In the start menu, search for "Storage Sense"
2. Configure Storage Sense
3. Empty bin after 30 days, check with customer if ok to empty Downloads after x Days.
   OneDrive - content will become online-only: 30 days