I've read over a dozen or so posts and web pages regarding the issue I'm having here and everything that I have found has either been left unanswered/unsolved or the resolution turned out to be something entirely unrelated to my experience. So I've come to make my own post in hopes that someone can shed a little light on what is happening here.
I'm going to try to be as specific as possible, so perhaps even overly so.
I built my computer about 2 years ago now and have had basically no issues at all in that entire time (besides a handful of very minor things). About a week ago I moved and now live somewhere where the ambient temperature is much hotter than before. I have been playing Ark: Survival Evolved for several weeks and have logged a great deal of hours into the game, both before and after the move. Today as I was playing, mind you I had only been playing for about 3 hours or so which is significantly less than some previous sessions, the game abruptly crashed. This crash was unique to all others (it is an alpha game after all) in that the screen simply went solid black and the speakers produced a distinct buzzing noise. I was unable to get any kind of response at all out of the machine, so after a minute or so I simply had to power down by holding in the power button. I actually left without turning it back on and simply let it sit for a handful of hours before I came back and powered up again.
Everything seemed to be back to it's normal self and I wasn't noticing any issues at all so I opened dota 2 (another game I have way too many hours into) and began playing. After a few minutes in the game, though only a dozen or so seconds actually in a match, I experienced the exact same crash.
At this point I was very disconcerted and concerned and went on a wild chase to find a solution.
So far I have opened the case and cleaned everything out ( I keep it extremely clean so it wasn't really dirty to begin with) I also removed most of the power and data cables to my drives and simply replugged them back in, as well as removing the GPU itself and reseating it. Simply as a "good measure" attempt.
Upon restarting I downloaded AMD's system monitor program and opened it, as well as my HWmonitor I regularly use to keep an eye on temps and opened Ark back up again. This time I only played for a couple minutes. Probably only 5-10 minutes, but both monitors were giving me excellent readings and everything was running as well as it ever has.
I assumed everything had somehow righted itself and returned to playing dota 2. This time I was actually able to play for upwards of 35 minutes, even most of those actually in match before the same black screen and buzzing noise crash happened again.
I was able to notice that the HWmonitor was giving readings of about 83 degrees Celsius on the GPU around and before the crash.
I have since ran MemtestCL and had 0 errors after 50 iterations. I am currently running Prime95 on blended settings and after an hour and a half have had no issues (I plan to run it over night). My temperatures are fine and nothing seems out of place or abnormal.
I'm at a loss for what the issue could possible be here.
I've just remembered I should include info on what my hardware actually is.
Motherboard: ECS B85H3-M9 (V1.0) LGA 1150 Intel B85
CPU: Intel Core i5-4460 LGA 1150 CPU - BX80646I54460
GPU: SAPPHIRE NITRO Radeon R9 390 100382NTOCL 8GB 512-Bit GDDR5 PCI Express 3.0 2.2 Slot, ATX Tri-X OC Version (UEFI) Video Card
PSU: SeaSonic M12II 520 Bronze EVO Edition 520W ATX12V v2.3 / EPS 12V v2.91 SLI 80 PLUS BRONZE Certified Full Modular Active PFC Power Supply
OS: Windows 10
I've never actually ever posted on a forum of this kind before, so I apologize if I've left anything out, or even more likely, if I've gone a little overboard on describing in detail what happened. But I appreciate your time and effort spent not only reading this monster of a post, but in trying to help me solve this problem.