Click on the "Advanced" tab then click at the bottom on "Enviroment Variables"
Step3
In the "System variables" box click new
Step4
In "variable name" box type devmgr_show_nonpresent_devices and then enter 1 in "Variable value" box. Click ok to close all the open windows.
Step5
Reboot to make sure the new setting is applied
Step6
Right click "My Computer", click manage, click device manager, click view,click "show hidden devices". You should now see the old devices, they will show up greyed out. You can highlight and delete any of the ones you no longer want.