my computer has been takeing a very long time to start up and to change from one sight to another it also sounds like there is something trying to load in the background there is thing flashing on the bottom of the toolbar where it tells you the sight is done loading and it clicks like when we hit on something to download i would llike to know are there any free antiviruses i can run or should i reset it to my default setting when i got the computer..1 person needs an answerI do too