How do I find out that my PC is infected by a virus?
Antivirus software programs, once installed, are the the most effective detection and deletion means, as long as they are actively and regularly updated. (Symantec Norton, McAfee etc.)
Furthermore, online virus scanners, a service supplied by antivirus software designing companies, are also available for those users who do not wish to spare cash for antivirus software and who, even if not constantly, want to perform some virus scanning. These have a construction to scan all the files in a PC from a distance. Although questions like "Is information being tapped?" are raised, their results are accepted to be satisfactory. Following the link below, you can have online virus scanning done.
Following the link below, you can download a free virus scan software and scan your computer.