So like my title says, I recently started noticed my computer is very slow, making very loud fan noises every 5 - 15 seconds and freezing when the fan becomes loud. I notice in task manager I am running 9-10 firefox processes which take up close to 100% memory, even though I am running 1 tab. I don't know if this a virus, or bug, but it is screwing my computer over. I have 8 GB Ram, and it shows 100% in memory sometimes from firefox, I think this is some virus, but I don't know how to get rid of it.