How to show all hidden devices in Windows Device Manager from the command prompt.

1.  Launch a Command Prompt console window with administrator rights.

2.  Use the command:

C:\Windows\system32>

set devmgr_show_nonpresent_devices=1

3.  To display the Windows Device Manger use the command:

C:\Windows\system32>

devmgmt.msc

4.  In Windows Device Manager select Show Hidden Devices under the View menu.