Server 2012 r2 hyper-v hosted domain controller, windows 7 domain PCs.
After an ungrateful shutdown (power outage over an hour) Rebooted servers and workstations to find broken trust relationships on many workstations and servers. Resetting machine password works for some but not all machines.
PCs that are moved to a workgroup and then back to a domain work until they are rebooted, then trust is broken again.
What is going on here??