I have been some trusty Windows Server 2003 VMs from Virtual Server 2005 across to Windows Server 2008 R2 Hyper V this week and without fail each of them has given me the boot message "At least one service or driver failed during system startup. Use Event Viewer to examine the event log for details."
Now I expect this when network adaptors have yet to find their drivers as all sorts of things fall over, but even once the devices were all happy and working the prompt persisted - checking the event logs showed that the Parallel port driver service failed to start - I didn't think you could get parallel ports on VMs! :)
Anyhow, thought I'll check the services MMC and disable it - but it was not to be found there. A quick search later revealed some posts suggesting I tweak registry values to stop the service ; but I don't like doing that sort of thing, especially when this one is a DC. So fiddled around with command line options for services and found that the answer is one line in a dos prompt thus:
sc config parport start= disabled
Simple, by the third VM I managed to remember it without looking at the help!