I've done both of those, the IDE shows Com5 and Com6 on the "Tools/Ports" but no board associated with them, either plugged in or not. Device manager shows Com5 as being active but not as a Nano. It has substituted a Windows driver for Bluetooth. I can't read the marking on the chip but it look like it might be a CH340. I'm seriously leaning towards as bad data cable, but can't be sure until I get some parts next week, so the project is on hold for the moment