Ok, as the Thread creator and what seem to be many other's problems with this motherboard, I have the following specs
Matched 4x8gb Corsair 2133mhh DDR3 (Been running 1333/1600/1866/2133mhz plus a multitude of different settings.
-Tried my GF's 2x8gb ADATA DDR3 modules too in multiple settings
I've been using SSD's from the day of purchasing this machine back in 2013, changed the system SSD at least once.
I've switched my HX850W Corsair PSU as I thought this could have been the problem, now using a brand new HX850i
Was using a i7 4930k Overclocked and not OC'd (have cleared CMOS in between)
-Now using Xeon 2697v2 CPU, running bios on Optimized defaults
I'm currently using a Nvidia GTX 1080FE, but was previously using Zotac GTX 1070 AMP!, have also tried with my gf's Asus Rog strix GTX 970 OC, Also tried a Radeon RX 570.
I've disconnected, changed and reconnected only necessary USB devices, Used to have an external USB 3.0 Hub, when I removed it, Computer ran flawlessly for over a week, but doubt it had anything to do with it.
I've always had problems with internally conntected (through USB) Corsair AIO's, Used to have a H100i, and every time computer "crashed" with the black screen but sound etc continues to run, I had to fiddle in bios (turn on Enabled or Auto on USB legacy mode) When Black screen comes now with my H150i, The LED fans go fro the set color scheme to the default rainbow scheme. If I'm streaming movies from THIS computer onto the TV for example, and this "crash" occur, it doesn't end the stream. I can watch it all the way through, at least it seem to be that way for the most part.
I've updated, and downgraded the BIOS, I've reinstalled windows probably 50 times on this setup, on different drives and even USB mem stick. I've got quite immaculate cooling (for being mostly air cooling) The black screen "crash" happens completely randomly, doesn't matter if I'm playing games, wathcing movies, browsing the internet, sleeping (so computer is idle) In fact, it's quite often "crashed" when I wake up in the morning.
I have always turned hibernation and sleep mode off completely, I've been running in High performance mode power setting, or Ultimate performance mode (changed through regedit variables) This motherboard has driven me completely nuts. The worst part is, I don't remember if it was like this from the beginning, I have a vague memory that it worked as it should prior to 2016 (before I changed my 2x 970 SLI setup for 1x 1070 GPU) But can't say for sure.
I'm obviously suspecting that the problem is a faulty Motherboard, but I can't say for sure, as It does seem stable from time to time, and if it's "breaking"/burning, I just can't see how it would still be the same and not totally collapsed by now, since it's been going on for years on end.
I'm about to rebuild my system in the coming week, so probably don't matter much. But I would love to know if this problem is fix'able or not, since it's been haunting me for so long.
literally all parts have been changed or temporarily changed/tested except the motherboard. Even the keyboard, mouse and monitor, even tried different PCI-E ports for GPU and much more.
cheers!