Your computer does not have recent minidump files because the creation of the dump files is failing.
In the last crashes, I did not identify any specific error that can be pointed out as a probable cause for the issue. However, a few days ago, there are some errors involving the Nvidia driver.
As the crash occurs when you are using Prepar3D and at a specific time, perhaps the Nvidia driver could be related to the crash.
Do a clean install of the Nvidia driver and see if the system will work stable.
Download the latest driver for your graphics card from the Nvidia website. Then use the free DDU tool to remove the current driver. Then install the latest driver using the installer you downloaded.
DDU: https://www.guru3d.com/files-details/display-dr...
Nvidia driver download: https://www.nvidia.com/Download/driverResults.a...
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