Nvidia fails hard and PC unresponsive

There’s a possibility that your issue might be related to the following thread. You might like to read through it, and bookmark it for reference.

The thread has existed for some time, and is ongoing. Very recently, there is indication of a possible fix in the pipeline.

In the other thread it’s mentioned that switching to kernel 6.18 (LTS) has shown no improvement, but I wonder if it might with your particular set of hardware…

Let us know if that brings any joy.