My colleague has two MacBook Pro 13 (Retina) laptops and has setup Windows 10 through bootcamp on both. The bootcamp wizard has been installed on both but there is a problem with the Thunderbolt drivers on one of them. When an external display is connected via Thunderbolt, it does not display anything until the machine is rebooted. There is a USB device in device manager that has an issue "set address failed" which we suspect is related to the problem.
The hardware is not quite identical... the problem machine is a 2014 MacBook Pro whilst the one that works is a 2015 MacBook Pro. Both are running El Capitan.