I was given a computer that I had to have a friend reformat for me. Since it was done any browser I use IE, firefox or google chrome they will show up under processes in my task manager after i have shut down what ever browser i use. The stanger thing is, it wont let me shut it down. so if I use a few tabs say under firefox it will say I have 3 running and my computer slows to a crawl. I have to reboot my computer all the time. I have ran advance system care, defrag, malware and virus scanner nothing works I can click end process all I want and it still wont go away under processes. any ideas?