So driver issue or hardware issue?
Had my 290 Vapor-x for around a year. In the space of about 11 months, I had 2 black screens that required a reset. Both times I was just browsing, nothing intensive, but I thought nothing of it, so infrequent, so meh.
Recently though, I've had two in a short period of time. One about a 2 weeks ago and one just now. The first I was just browsing. The 2nd I was watching twitch and the screen just went black, sound carried on playing for a 10 seconds or so, and went as well (no buzzing or anything, just silence). Again, crashed the system completely and needed a restart. One thing to note, is that twitch deployed html5 player recently, and I did notice, for some reason the memory clocks keep spiking high with that (1400Mhz), while the core sits at idle speeds.
I'm on 16.7.3, just drivers being meh? I did change case recently, power cables etc all look snug and both times have been when just browsing, nothing intensive. None of the black screens have been. System has always been fine when gaming or when idle on desktop, all 4 black screens have always come when browsing.
Monitor still has signal (120Hz@1080), it's just black until the system is reset/powered off.
If it matters, the card has Hynix memory & the power cable (from a hx750i), is one with 2 pci-e on the end. Should I try switching to two seperate cables?