I have plugged in my USB to my windows 10 laptop and it is not seeing my turbo 2, not sure if it is something with the phone or I need to do something with laptop.
With the Marshmallow update, the USB default is charging only. Pull down the notification shade and tap where it says it's connected for charging, then change it to MTP.
i got the MTP on through the developer in settings and the windows 10 (upgraded from windows 7 via windows 8) and still no joy. I am not sure if there is something from the laptop that is creating this issue too.