In the picture you see the problem im having, i tried every driver for R9 390X from Crimson Edition 15.7.0 to Crimson Edition 16.4.1 in windows 7 and 10. There was no problem without the Crimson driver in windows 7. It also worked on an HDMI TV.
8192MB PowerColor Radeon R9 390X Devil Hybrid PCIe 3.0 x16
ASRock Z97 Anniversary Edition Intel Z97 So.1150 Dual Channel DDR3 ATX
Intel Core i5 4590 4x 3.30GHz So.1150
480GB SanDisk Ultra II 2.5" (6.4cm) SATA 6Gb/s TLC Toggle (SDSSDHII-480G-G25)
24" (60,96cm) BenQ GL Serie GL2450E schwarz 1920x1080
Tried 2 different 24+1 DVI-D Cables