hey i have the same problem.
i have a AMD fx9590 cpu
and asus m5a990fx pro r2.0
and the MSI R9 390X
Geil 16 GB 1833 Mhz
crosair 1000 Watt platinum psu
the problem is that sind the new drivers the 16.12.1 and the 16.12.2 the pc is suffering from bad drivers and faulty drivers. its causing random black screens every 15 min. or so. and i tried everthing older drivers everything. and when the black screen happens the sound go on and is not in a loop. only the dislay goes black for 5 sec or so. that means its a programming.
hope you have an anser for this.
Well i installed earlier drivers (16.9.1) and since i have done this, i haven't had any problmes....(about 3-4 days). I hope this can help you .