--- SOLVED ---
The tool "speccy" gave me a good insight:
CPU CORE 0.960 V
MEMORY CONTROLLER 2.220 V
+3.3V 2.904 V
+5V 4.939 V
+12V 11.616 V
-12V -8.880 V
-5V -8.880 V
+5V HIGH THRESHOLD 2.822 V
obviously the motherboard is broken
i am putting all my hope in you now and this is my first post so please be nice to the bloody noob.
Few days ago my computer started to freeze randomly when playing games especially in the lobby or at the loading screen, several times it worked tho.
My first thought was that the...