The latest minidumps mention the same error and the Nvidia driver as the cause of the crash.
Since you've already done a clean install of Windows and used MemTest86, which didn't detect any RAM issues, I'm afraid the problem is hardware-related. Based on the behaviors you mentioned, I suspect the graphics card or motherboard. But there is a small chance that it is the power supply.
What is the manufacturer and model of your graphics card? (Example: Asus DUAL-RTX3060-O12G)
What is the wattage of your power supply?
I see you have the "Intel Core i9-10850K" processor which has graphics capabilities. Is it possible to remove the graphics card and use the integrated GPU temporarily to see if the system will work stable?
You will need to connect the monitor to one of the motherboard's video outputs.
I await your reply. Click on the "Reply" button below my reply.