WMI Fix

    a. Re-register all of the dlls and recompile the .mofs in the wbem folder and re-registering WMI Service and Provider. You can use the following script by saving to txt file then renaming to .bat and running from command prompt with admin right and changing focus to following directory: C:\Windows\System32\Wbem.

@echo off
sc config winmgmt start= disabled
net stop winmgmt /y
%systemdrive%
cd %windir%\system32\wbem
for /f %%s in ('dir /b *.dll') do regsvr32 /s %%s
wmiprvse /regserver 
winmgmt /regserver 
sc config winmgmt start= auto
net start winmgmt
for /f %%s in ('dir /s /b *.mof *.mfl') do mofcomp %%s

    b. Reboot the machine and test WMI

Next, check the repository for consistencies:

For Windows Vista, Windows 7, Windows Server 2008, and Windows Server 2008 R2, you can run winmgmt /verifyrepository from a command prompt.
For Older OS like Windows XP and Windows Server 2003 run: WmiDiag tool with the checkconsistency option. For example: WmiDiag checkconsistency

If repository is found to be inconsistent:

    a. For Vista and newer, run from elevated command prompt:

Winmgmt /salvagerepository

Note this command will take the content of the inconsistent repository and merge it into the rebuilt repository if it is readable

If the above doesn’t work, then run:

Winmgmt /resetrepository

Note this will reset repository to the initial state when the OS was first installed

For Windows XP and Windows Server 2003, there are no built in switches to rebuild the Repository, so you must do it manually.

Warning: Rebuilding the WMI repository has resulted in some 3rd party products not working until their setup is re-run & their MOF re-added back to the repository. 

If /salvagerepository or /resetrepository does not resolve the issue, then manually rebuild repository:

1. Change startup type to Window Management Instrumentation (WMI) Service to disabled
2. Stop the WMI Service; you may need to stop IP Helper Service first or other dependent services before it allows you to stop WMI Service
3. Rename the repository folder:  C:\WINDOWS\system32\wbem\Repository to Repository.old
4. Open a CMD Prompt with elevated privileges
5. CD windows\system32\wbem
6. for /f %%s in ('dir /b /s *.dll') do regsvr32 /s %%s
7. Set the WMI Service type back to Automatic and start WMI Service
8. cd /d c:\  ((go to the root of the c drive, this is important))
9. for /f %%s in ('dir /s /b *.mof *.mfl') do mofcomp %%s
10. Reboot the server

Finally, install latest hotfixes for WMI as they can help prevent issue from recurring.

https://blogs.technet.microsoft.com/askperf/2011/08/05/suggested-hotfixes-for-wmi-related-issues-on-windows-platforms-updated-august-9th-2013/