BSOD :: Random Restarts With 0x124 Dump

I would get a black screen for a few moments, before the computer just restarts. No BSOD, no screen tearing or strange noises from the case, no indication whatsoever that it was about to restart. So I started trying to figure out what was wrong. Using Bluescreenviewer and WhoCrashed? I found out that it was a 0x124 error citing the ntoskrnl at fault. Reading online, it seemed that this was generally caused by either a thermal issue, hardware problem or in some cases driver problems.

I started updating everything I could. Graphics drivers, mouse drivers, keyboard drivers, BIOS drivers, etc. Still got the restarts. They seemed to be appearing only when I was playing games (don't use this particular PC for much else, so took a while to realize), so I decided to check thermal issues. Using MSI Afterburner and CPU-Z, I found that my CPU was never reaching any significant heat (my Hyper 212 EVO keeps it under or around 40C even under heavy load), and that while my graphics card got hot, it never went beyond 70, so it didn't seem to be a thermal issue there.I ran memtest86 to try to identify ram issues, and it came back, after a night of running, clean. I did a dskcheck /r, and while it took a bit of time, it too came back alright. In order to truly rule out driver issues, i reinstalled windows 10, and still it kept happening.

I read online that there was a chance that the power supply could be acting up. Since I had been meaning to update my graphics card, and needed a new power supply to go with it, I decided to do that. I plugged in my new PSU, and my new GPU, and it went fine for about a day or two before the restarting resumed. I tried playing with the case side open, to truly rule out cooling issues, and it still restarted. I moved the computer, and plugged it straight into the wall because I had a suspicion that maybe the extra cable wasn't giving it enough juice, but it still restarted.

I'm now at my wits end. I've tried everything I can think of. My new GPU never goes to high temps, my CPU seems to be running fine, I haven't found any ram memory problems, my new PSU can't be to blame, and so I don't know whats left.

Tl;dr
Restarts started after some inactive time. Seems to be a 0x124 bsod error
Tried the following:
-update all drivers
-update BIOS
-re-roll to previous versions of graphics drivers
-re-install windows 10
-purchase new PSU and GPU
-memtest86 came back ok
-dskcheck /r came back ok
-tried playing with side off

MSI never shows the CPU or GPU going into any dangerous territory in terms of temps.