Windows: Show nonpresent devices (device manager)

SET DEVMGR_SHOW_NONPRESENT_DEVICES=1
devmgmt.msc

REM ----------------------------------------------
REM DeviceManager: Menu Ansicht - Ausgeblendete Geräte anzeigen
REM ----------------------------------------------
REM further info:
REM http://www.makeuseof.com/tag/how-to-easily-remove-old-drivers-from-windows/
REM http://www.techrepublic.com/article/removing-unused-device-drivers-from-windows-xp-machines/6017628
REM ----------------------------------------------