dakoctba · April 16, 2014 10:21
diff --git a/gistfile1.txt b/gistfile1.txt
 The trick was to open the Command Prompt as administrator and start the Device Manager from the same command prompt.

 1. Right-click “Command Prompt” in Accessories and choose “Run as Administrator”
 2. Enter “set devmgr_show_nonpresent_devices=1″ – without the quotes obviously
 3. Enter “start devmgmt.msc”
 4. In the box that opens, select “Show hidden devices” in the ‘view’ menu.

 Now if you expand the section on COM ports, all the COM ports that have ever
 been created will be displayed, the non present ones being in grey. You can
 uninstall away anything that you don’t want (right click, select uninstall).

 by
 http://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/how-do-i-delete-the-unused-com-ports-in-windows-7/4bb72733-1be0-4168-9ba5-68dcb72d31d9
	The trick was to open the Command Prompt as administrator and start the Device Manager from the same command prompt.

	1. Right-click “Command Prompt” in Accessories and choose “Run as Administrator”
	2. Enter “set devmgr_show_nonpresent_devices=1″ – without the quotes obviously
	3. Enter “start devmgmt.msc”
	4. In the box that opens, select “Show hidden devices” in the ‘view’ menu.

	Now if you expand the section on COM ports, all the COM ports that have ever
	been created will be displayed, the non present ones being in grey. You can
	uninstall away anything that you don’t want (right click, select uninstall).

	by
	http://answers.microsoft.com/en-us/windows/forum/windows_7-hardware/how-do-i-delete-the-unused-com-ports-in-windows-7/4bb72733-1be0-4168-9ba5-68dcb72d31d9