Firefox just crashed and I wasn't able to restart it. It crashed by every restart again. This is something new again. :D
I attached the dxdiag results after the firefox crash. It shows nothing as far as I can understand.
So in theory the video card and the memory are okay, in practice we got errors related to them. Probably then the motherboard is not okay.
I attached a hwinfo report as well. In theory the voltages are okay, but the rams are on 1.8v according to this. I remove now the 1.8v module and keep only the 1.65v modules now. Maybe that helps.
I removed the high voltage memory module and its pair. Now I have only a pair of 1.65v modules with XMP. The BIOS shows 1.5v ram voltage and the hwinfo still shows 1.8v dimm voltage. I don't understand, both should be 1.65v. Wtf is going on? :D