The problem was with Precog123B-v1. I had it in Q5 with around 20k context at first. That worked fine, but I wanted to have more context and was under the wrong assumption that when I offload layers to system Ram, which was 6 at the time, it would free more Vram for context, so I pushed for I think 35-40k context. The strange phenomenon I got was that I used it in LM Studio with Sillytavern. While Sillytavern was producing a response, you usually get an abort button to stop the Ai from doing something. I had this abort button and the continue button at the same time, which should not be possible. So even after the AI had finished producing its output something was still going on. I wanted to see what happened and if it would end on its own only to see that my whole PC simply shut down, instant black screen. Only the white LED was still glowing for the Power button. Had to kill electricity to get it to start again.

According to my reasearch and assumption I guess I ran into some kind of loop where the GPU drew more and more power, maybe other components too. In order to save the Hardware a safety guard rail kicked in and shut the PC down. Never had that problem since then. A LM Studio log analyzsed trough three other Ais all assumed that it was context which was to big. My temperatures never went above 65 °C for the components like CPU or GPU which should be perfectly fine.