You can also do a 'Restore' to before you up loaded the ''free'' headaches. I 'd go back a couple of weeks and then go to the add/delete programs to make sure they are all gone. My son has Avast on my computer and they do have a free download and even if you buy the program it is very reasonable. It has kept bugs and viruses away from me. Also have Mozilla FireFox which is also a free download. My son and DIL make their living fixing computers so they know what is and isn't harmful.