Hello! so this is my brand new build. everything in this build is absolutely new. i had it for about a month before sli-ing another GPU to my build to ensure everything was working properly. before it worked fabulous no random shutdowns. (there is no blue screen just straight to off) now i have added another 980 ti to my build and it ran great for about a week then its shutdown twice now. once under load of gaming and then just browsing the web. i have a 1000 EVGA 80 platinum PSU. could it be my power supply? or a doa GPU.