I have a Dell XPS 15-9550 with 512Gb SSD, NVIDIA GeForce GTX 960M, and Intel 530. The SSD is encrypted using Bitlocker. I use it with an external monitor Dell U3415W. I’ve had intermittent problems with internal display blackout since day 1. I’ve had to force power down (10 seconds on power button) dozens of times. Sometimes it takes 2 or 3 cycles to come back.
As of a couple of days ago it appears the internal display has completely stopped working. There is back light but no image and no mouse. How do I recover this display?
Dell XPS 15-9550