seems like this issue is pretty hot but nobody can pinpoint the culprit yet. I've also been plagued with this issue since I bought my XFX RX480 GTR SwapFan Black Edition. let me start with my system specs.
Radeon Software Version - 17.7.1
Radeon Software Edition - Crimson ReLive
Graphics Chipset - Radeon (TM) RX 480 Graphics
Memory Size - 8192 MB
Memory Type - GDDR5
Core Clock - 1338 MHz
Windows Version - Windows 10 (64 bit)
System Memory - 16 GB DDR3 1600Mhz
CPU Type - Intel(R) Core(TM) i5-4460 CPU @ 3.20GHz
Display - Samsung 24" LS24E390HL display (connected via HDMI)
PSU - KCAS 80+ Bronze 700watt PSU
Operating system - Windows 10 pro 64bits
Just like every one, my monitor would go blank (but sound on-going) and my system would freeze randomly and all i can do is to press the reset button. I've used this system with an Asus Nvidia GTX760 card before without any issues. even now, if i put back the card again, the issue won't appear. it make me set the focus on the RX480. I'd be very glad if anyone can help me with the issue.