Sunday, November 27, 2011

Show hidden hidden devices in device manager

Back in the "old" days there was a registry setting to show all hidden devices in device manager
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment]
Just add "DEVMGR_SHOW_NONPRESENT_DEVICES" as a REG_SZ (String Value) with valuve 1
You have to use this to show devices that was not shown even after turning the "View - Show Hidden Devices" on.
So no, its not a typo in the title, its to show hidden hidden devices
Yesterday I got a great tips, that makes it posible to do the same thing with out addning registry setings.
How to use it can be found at this Microsoft articel here

But its quit easy to do it, just start a command prompt and type in this 2 lines (followed by enter ;-):
set devmgr_show_nonpresent_devices=1
And be sure to turn on the "Show Hidden Devices" under the view menu
BUT!!!! Be aware that some system devices will look like they are not active unless they are beeing used (runned by programs or services) so do not delete stuff that you are not sure about

Without showing hidden devices

And showing hidden devices

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