How to delete/remove/unistall service from windows (general)？
First, you should know what it is：
Just go to Google and search the Caption of service you want to remove/unistall/delete .
Now, you know what it is, and you will find an execute file (*.exe) that can install/unistall that service.
(Let us take it as "service_exe.exe")
Second, you shold know where it is：
I think that's very easy for everyone to do it, just search it.
Third, unistall/remove/delete it !：
Go to command line DOS (Start=>Run=>cmd.exe), change path to that execute file.
You can type cd path and press Enter to change path.
(For example, if you want to change path to C:\Windows\, you should type cd C:\Windows\)
Type service_exe.exe /unistall and press Enter, then you finish remove/delete/unistall service.
(For example, you want to delete/remove/unistall a service which is installed by pcm.exe.
Type pcm.exe /uninstall and press Enter)
#：If possible, delete the execute file after remove/delete/unistall the service.