You don't have to change anything normally, it should just work. What happends if you go to start/run/cmd and then just type
sc and press enter?
Also if you do a search for
sc.exe, is that present on your pc?
But lets try it an other way:
Click Start>Run and type in: services.msc
Click OK
In the Services window find:
SymWMI Service
Select/highlight and right click the entry, and choose: Properties
On the General tab, under Service Status click the Stop button
Beside: Startup Type, in the drop menu, select: Disabled
Click Apply, then OK
Open
HJT and click config > misc tools > “delete an NT service”
Copy and past:
SymWSC
Click OK.
When done, post a new
HJT log please.