@Meldres The Pc´s was everytime shutdown normal, this could not be the reason.
In the past few weeks I haven´t the time to examine this issue and I help me with a sheduled task which PowerOn the Pc´s over WakeOnLan and Autologon 1 Hour before they get used
One thing drive me mad too, I grap one PC and used Windows Performance Toolkit / xperf but... I restarted this machine over 50 times and everytime it boot fine. The issue isn´t reproducible.
All what I can say is, the PC´s aren´t online, a ping to the machines get no response, so no way to get remote on this machine to look what is running. Only one time I was able to get remote to a machine which hung on the Welcome Screen and I find out that under services the Windows Update Service stay at "starting", as the Desktop appears, the service was started.
I´ll now take a deeper look with gpsvc loggin.
