Laptops are not shutting down completely

[rsm00]

We have an issue where some of our laptops (specifically ZB7s through ZB10s) are not shutting down completely after prompting a shut down. The computer goes into a sleep state but will not be completely powered off. If you check the uptime in Task Manager the next time you login, you can see it wasn't shutdown. 

It is also probably worth noting that these are connected to HP Thunderbolt Dock 280W G4's and 230W G2's most of the day. So maybe some of these docks are interfering with the shutdown process?  However, it also happens when a laptop is disconnected from the dock, and you prompt a shutdown. 

Any input on why this is happening will be helpful. 

[DGroves]

the usual cause id due to a running task not terminating or releasing ram 

when you shutdown windows sends a close all running apps/processes and once they close it finishes the shutdown

check your windows log files, and/or start the laptop with no apps or auto startup's running and check if it now will shutdown, booting in safe mode is a quick way to do this