Please please help me. At first I thought it was my hd3000 GPU was so out dated it couldnt handle 480p video on youtube in a small window. Then I noticed the fan would go over time. Since ElCapitan its been near maxing out the 4GB of RAM as thats what ElCapitan and Sierra are instructed to do, so Chrome has its helper, Firefox has up to 4 helpers at a time, all choking up the ram, but that doesnt explain why Im getting so hot as my CPU is NOT getting above 10% usage. I only ever have a browser open, no other apps. Any theories please?