I'll just be browsing the web and my CPU will go up to 60-95% usage. Using a Core 2 Quad so I don't think it should be taking that much CPU for a simple task. Not only does the CPU usage go way up but also the CPU fans get much louder and also I notice flickering of the taskbar and address bar of the browser, and if I right click something the pull down menu will be flickering as well.
What the hell is going on? This has been going on for a while but I'm getting pretty annoyed by it at this point.
sounds like malware. try malwarebytes if that finds stuff clean it and then try avira antivir (a free antivirus that is better than most payed av's)
even if you find nothing you will at least know your system is clean.