Inveni 2 modus solutio, sed non auxilium
This error has been affecting many people, often after using the HWID Spoofer. Usually the first solution is enough but please try the second solution if the problem persists.
First Solution
Open Task Manager, go to Services
Open Services
Right click on "Windows Management Instrumentation, select Properties
Change Startup type from Disabled to Automatic
Press Apply
Press Start
You're done, just press OK
Second Solution
Open the command prompt as administrator (cmd.exe)
Run the commands below
net stop winmgmt
winmgmt /resetrepository
winmgmt /verifyrepository