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I don't see any detail about your laptop and laptops here don't have a device labeled "receiver" so some further explanation could help. However I just fixed a com port error like that by two means.
1. We checked a box in some control panel to "never dial"
2. We disabled the modem in the machine's bios.
when i download programme from my laptop to my receiver i have error message com port open failed, before same port was working and i also dont have to download anything for that port but now it's asking for download support programme usb to com port i tried that one too still not working just curious if anyone know the solution, my email is firstname.lastname@example.org