Almost every time i turn on my computer it takes forever to boot and i
receive a message that says:
"Application popup: Service Control Manager : At least one service or
driver failed during system startup. Use Event Viewer to examine the event
log for details."

When i use Event Viewer i always find:
"The Windows Management Instrumentation Driver Extensions service hung on
starting."

I've already tried the WMI diagnosis tool and i re-registered some dll it
said was missing, but the service keeps failing to start and i need to wait
like 15-30 minutes to be able to use my computer after turning it on.

Anyone knows how to fix it?