On the end I found it happen again even when there is no antivirus (except windows defender which i turned off) that means it has nothing to do with Avast or other antivirus.
I checked whole laptop, fresh system installation, stress tests, memory and disk tests, I disconnected all possible parts, I changed RAM and CPU as wellnothing helps ..
Only thing which left is motherboard, but I would say its because of Gameguard, because it happen only when I play Rohan. Gameguard must be in conflict with some of my HP drivers, because on other PCs its ok. I was monitoring system and temperature was about 30 degrees below CPUs critical temperature and hardly 70% load. There are no records about these shut donws in system event viewer. BTW even compatibility setting to windows XP SP3 didnt help
Id say its my goodbye to Rohan ...