Com port assignment

[Big Country 3]

[i have just installed a new bluetooth adapter on my computer and was trying to make it work with a serial to bluetooth adapter. My problem is that I have all of my com ports assigned to other things that I don't use very often and they are taking up space on my com port locations. I need to release some of them but don't know how. I have attached a pic of what I have going on. Please help I am about to pull my hair out, I have spoke to the company IT dept and there like DUUUHHH.

[Crossbow 295]

Go into the Control Panel, System, Device Manager, and remove them under the 'Ports' heading.

[Big Country 3]

I did but that doesnt remove them from being registerd to those drivers for some reason. I can't get it to release those com ports.