I'll also share my take on free versus paid anti-virus software. Here's a rundown of the most popular free anti-virus packages. The good news is, there are plenty of anti-virus programs that can clean up the mess and keep you safe going forward. Viruses not only take up valuable memory and slow down your computer, they can also expose your personal information to Evil Hackers. What's wrong? It could be a computer virus, or perhaps a bunch of viruses, infecting your hard drive. your high-speed internet connection feels like dial up, and popups are popping up everywhere. Protect Your Computer With Free Anti-Virus Software