Firstly do this exactly ... copy and paste line into EV box ..
Start, right-click My Computer, and select Properties.
In the System Properties dialog box, select the Advancedtab and click the Environment Variables button.
In the Environment Variables dialog box, locate the System Variables panel and click New.
In the New System Variable dialog box, type DEVMGR_SHOW_NONPRESENT_DEVICESin the Variable Name text box and type 1in the Variable Value text box.
Click OK twice.
To view the non-present devices, go to Start, right-click My Computer, and select Manage.
Click Device Manager, pull down the View menu, and select Show Hidden Devices.
That's first stage. You can leave permanently like this. Close up when working ok. I expect you will see a rake of stuff appear.