BSOD Error 124 playing Monster Hunter World

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Since starting long sessions of CPU hungry Monster Hunter World, after 2 days of playing my PC started occasionally rebooting without warning and giving BSOD error 124.

Please can someone help by looking at all the minidumps I've collected.

I have been trying to find out some patterns on this problem, I suspect it is heat related as I found out under load my CPU can be sitting at ~65c+ temps during playing this game and I suspect excessive heat my have damaged something. Spikes at 70c have happened. I knew the CPU ran hot as I run in a m-ATX case, but I didn't know until very recently my CPU threshold is only 61c! The problem can happen at a higher frequency when the machine is hot, and as soon as the game starts. Such as starting a FurMark test. Or going from the loading screen on MHW into gameplay. The reboot would happen right at this point. I can get lucky and have a gaming session last 45 mins then crash after I into the game menu. I have also had crashes mid game after 45+ mins of gaming.

I have done several hour long sessions before on the PC without a single issue and done so for over 2 years. Problem only started happening for last 3 days after long, hot sessions playing MHW.

Help please!

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Attached my DM Log Collector archive, and also another link to my drive where my dump files are located.

NOTE: I have replaced the motherboard and upgraded the cooler. Has made no difference.

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