Interesting. I was just about to start watching some shows with SVP, CPU-Z and GPU-Z running just before, but was skipping through a few episodes(seeking and skipping to next file) when I got the same crash, but SVP wasn't running, unfortunately I didn't have the other two running so I couldn't check if it was an overheating problem. It happened when I skipped to the next episode. Thing is, it's first time it's ever happened when using the MPC-HC(fresh download and setup via the instructions you linked) normally. I haven't been able to get it to crash again though despite lots of seeking and skipping files. The only difference from when I watch shows normally is that I now have madVR as directshow video when before I was using whatever was the default.
Anyway I'm going to run everything and watch some shows, I'll see how it goes! Not going to use madVR this time, if it still crashes then it'd be safe to assume it isn't that.
Edit: Btw, what are bad temperatures for the CPU and GPU to be at? I used to know but I'm out of the loop when it comes to PC stuff these days.
Edit 2: Okay so it happened again without madVR and this time SVP running, it has to be my video card as it froze both screens temporarily and I'm now getting mess ups on my primary monitor(seems to be only happening in my browser though), such as blocks of the screen move to another part of the screen and leaves a black spot where that part of the screen normally was. GPU temp went up to 46 degrees, the fan speed % is normally 20% and went up to 27% max. This has never happened before either. My CPU temp only went up 2 degrees from what the max was previously so I don't think that's a problem. These mess ups are still happening despite the temperature going down though, the display driver stopped and had to recover again.
I had to restart my PC to fix the issue with my browser on the primary screen. Could it be compatibility issues with my video card driver?