I just thought I'd chime in , I have a Viking myself and for a while I did have the issue with the GPU 1 fan not spinning . I was in windows 10 at the time then upgraded to 11 . Had the issue still but did a fresh install and both my fans spin now when the gpus are under load . I have the stock 970 in slot 0 and the p4000 in slot 1 both fans spin up . Now I will say batteries for these laptops are hit and miss as every battery I've bought including an ifixit one has died or acted weird after a whole . I'm curious about the resister mod . I have a vague idea where it is but I need to know what resister to add .