rust ramdom Black screen with freeze of sound and hard reboot

[Thegman]

i have tried evrything check all temperature and only in rust since two year i get ramdom crash all the time that can hapenning in like every join of a server or after 3 hour
in the event aparently it's kernel power (41) that doing it but i think it's nvidia or directX11 
i have been trying to correct this thing since they put only the dx11 avaible 

spec: 
8gb 2133mhz (2x4go)
i7-4790k 4.2ghz
ssd
1000w antec
sli - 2x 960 2go windforce

i have tried disabling enable sli physicaly swap gpu with other gpu 
reinstall windows and gpu driver i only h'avent tried reroll the display driver to another version but since 2 year this problem haven't been fix
i am trying to see if it's with with only one card both or the other one (sli problem maybe)
i hope someone could hep me