I've been trying to get you the logs but so far its worked fine. I think much like digbyp stated, this it to do with a restart initiated after updates.
Following last night I had 3 or 4 servers not come up correctly that fail to reproduce this issue when a restart is initiated from the server itself.
Taking a look through the logs and I can see the following logged:
Event ID: 7000
Source: Service Control Manager
The PC Monitor service failed to start due to the following error:
The service did not respond to the start or control request in a timely fashion.
Manually starting the service works but isn't always practical.
Noticed this on a couple of servers but after a restart the pcmonitor service doesn't start.
I've double and triple checked that the service is set to automatic start and restart on any failures but still the service doesn't start.
Has anyone else had this experience?