Kaspersky antivirus software is very good, but what if you don't want to use it? Here are several recommended products from other companies.
Avira Free Antivirus is a solid piece of software, but Bitdefender offers better performance, protection, features and a cleaner interface.
Online diagnostic tools allow you to diagnose and troubleshoot your machine. Keep an eye on your system and keep malware out with these free online tools!