If you try to stop a AOS service but if gets stuck trying to stop you can kill it with the taskkill command.
Open up the command prompt. And use SC which is a command line program used for services.
Run SC with the commands queryex AOSNAME$NN to find out the PID for the service: SC QueryEx AOS60$01.
Then run TaskKill using the PID and F parameter to force the service manager to shut down the service: TaskKill /PID XXXX /F