I purchased this monitor about 4 weeks ago.
The screen goes black only for a 1-2 seconds and then back to normal. This happens randomly.
I am pretty sure I can rule out the GPU since my previous monitor 2412HM was running with it and it didnt go randomly black.
I was running Windows 10 and initially thought maybe this was due to beta software. However I have been running Windows 7 now for a few days and problem remains.
I am using Display Port, the GPU is a EVGA Nvidia GTX 770.