Eliminating Phantom COM ports
de Bill W9OL
in a CMD window, execute the following commands:
set devmgr_show_nonpresent_devices=1
cd c:\windows\system32
start devmgmt.msc
in the Device Manager window that appears after step 1.c,
in the View menu, select Show Hidden Devices
- click on the + or triangle to the left of Ports to display a list of all present Ports
click the Port you wish to delete, and strike the Delete key
- when asked, confirm your intention to delete the Port