I'm seeing my xps screen briefly flicker with rainbow snow/white noise all over the screen.  It's too fast and random to capture with my camera though.  This morning the screen went black for about 30 seconds before going rainbow for maybe 10 seconds and then went back to normal.  I've got a pretty uneasy feeling feeling about the device. It could be faulty but proving that will be pretty difficult. 

I tried the screen test reboot test (Hold D while the machine boots) and the screen displayed a bunch of full screen colours, red, green blue, white black.  

Its not the 4k model and all drivers are up to date (at least according to dell update)

Anyone else seeing that?