Laptop BSD's and then can't find its hard drive.... for about 5 minutes!

I have a 5 year old Erazer P17613 gaming laptop. Recently, when playing a game that asks for some grunt, the machine would BSD and restart, then on booting complain that I need to fit a hard drive.

Give it 5 or ten minutes turned off and it boots fine.

When recreating the crash the CPU temp hovers around 95-98 degrees C, the GPU maybe 10 degrees lower. I tried running with it sitting on a few freezer blocks and it made no difference.

When browsing / streaming it's absolutely fine.

I split the case and spent a whole can of air blowing a not particularly large amount of fluff out of the innards, and now when it BSDs it reboots all the way to the login screen without needing to wait,

There are two possibly interesting events in eventvwr: "The previous system shutdown at XXXX on XXXX was unexpected." and "Dump file creation failed due to error during dump creation.".

From device manager:

Intel Core I7 processor

8GB RAM

NVidia GeForce GTX 1650 4GB graffix

E12 1TB Phison SSD