How to safely to remove antivirus?

I would suggest Avast! Free AV. I've been using this for a year now, and it is working great. It doesn't bog down my computer, even during scanning. But, if it is possible, I would suggest that you reformat your system drive just to make sure that when you install Avast!, you would be running it free from any malicious content. What happens is that, sometimes, even if you installed a new AV in your system, once the infection is embedded, it render the AV useless. Or, I would suggest that you download Malwarebytes' AntiMalware, this product is also free. After download, install it, update, then conduct a full system scan. In my experience, when I cannot remove the infection through the AV, I use this product instead, and it has work for me flawlessly. Only thing is, the free Malwarebytes product doesn't have real-time protection. But, after you cleaned-up your system using Malwarebytes, and installing Avast, you should have a fairly good-running system already.

Hi, why not forget to use antivirus, it keeps your computer running slow. Try to use a program called DEEP FREEZE or SHADOW DEFENDER. Once you restart your computer, problem gone.