So, i was have your problem. And when I update driver of here :
https://dl.dropboxusercontent.com/u/14937594/cube/I15-TC%2019.08.2016%2019-34-31.zip
with Double Driver for backup and restore your driver π
It is working correct, but some time, blackscreen is comeback, but you can press space button, your display is turn on again π
But now, i was restore win 10 stock and disable update windows to Anniversary version, because i think it very lag and delay so long time π
I think, we need some time for cube update driver for it. And when update to win 10 anniversary, i see storage is full. And opera is best browser for cube iwork 10