Solve : Very new, and I need some help!?

HI! Okay, so I am very bad with COMPUTERS, but I have a laptop. And all the time it says that I am using 99-100% of my processor.. Well, I checked it now, and now it says I only use like from 8-50%.. Which is good?

Yesterday, I took a fullscan test with avast Free AntiVirus, and it detected 1 harmful file, which I assume is a virus. It was called "smain.htm" - and I put it in the viruschest, and I restarted my laptop, so avast could do some stuff.. Now- do I have to do anything else after that? Because I feel my laptop shouldn't be messing up as bad as it is, it goes REALLY slow sometimes.. (forexample if I am on Skype, and are doing something on chrome at the same time.. Is that NORMAL?), and hangs up alot. I have a packard bell easynote tr85 notebook... http://www.techgadgets.in/images/packard-bell-easynote-tr85-notebook.jpg <- that is a picture of it

I would appreciate help.. Okay Bye- have a nice day!! Please go to this link and follow the directions and post the required LOGS. Please post your logs in this link.