To reset the WMI repository (which is essentially clearing the WMI cache), open Command Prompt as an administrator and use the command winmgmt /resetrepository. 

Here's a more detailed breakdown:

Steps to Reset the WMI Repository:

1. Open Command Prompt as Administrator:
• Press Windows+Q, type "cmd", right-click "Command Prompt", and select "Run as Administrator".

2. Stop the WMI Service (Optional but Recommended):
• Type net stop winmgmt and press Enter.
• If prompted to confirm, type "Y" and press Enter.

3. Reset the Repository:
• Type winmgmt /resetrepository and press Enter.
• You should see a message indicating that the WMI repository has been reset.

4. Start the WMI Service (Optional):
• Type net start winmgmt and press Enter.

5. Reboot your computer . 

If that doesn’t work do this

1. Stop the WMI Service:

• Open Command Prompt as an administrator (search for "cmd" in the Start menu, right-click, and select "Run as administrator").
• Type net stop winmgmt and press Enter.
• If prompted to confirm, type "Y" and press Enter. 

2. Rename the Repository Folder:

• Navigate to the WBEM directory: C:\Windows\System32\wbem.
• Rename the Repository folder to something like Repository.old. 

3. Restart the WMI Service:

• In the Command Prompt, type net start winmgmt and press Enter. 

4. Rebuild the WMI Repository:

• Open a new Command Prompt window as an administrator.
• Change the directory to the WBEM directory: cd C:\Windows\System32\wbem.
• Run the following command to register all DLLs in the WBEM directory: for /f %%s in ('dir /b /s *.dll') do regsvr32 /s %%s.
• Reboot the server.