USB Powermanagement

Devices stop reacting / Displays stay blank after a while

Windows is putting the devices to sleep... So after you start spad and it runs and sees the devices... eventually they go to sleep when there is no interaction with them for a while...

Please also see this article about the common requirements for connecting USB devices to flight sim computers: USB HUB Requirements

f you have Checked off the Do not notify me ever... you can re-enable it here

You Need to disable the power management at all levels!

Controllers, Hubs, Root Hubs...

Also check all the devices as well

Also make sure in your system energy options you have also disabled the selective suspend