There are many ways to indicate that there is a virus on your Computer, with this easy steps you can tell if your machine is infected
step 1. press ctrl+shift+esc and look at the processes tab, this shows all the information on all the programs that are running on the computer. u can tell by the domain name. if something that doesn't look right, u can right click and go on `` open file location`` and see what type of file it is a where its located on your HDD
step 2. windows vista and windows 7 comes with their own anispy-ware program that is called " windows defender ". this program works well in terms of finding out if your computer is infected and will sometimes even take care of the problem. If your using windows XP. you're going to have to download a free antivirus program....
