To Paranoid: I will explain my problem better. Avast works fine. The problem is that when I boot up my computer, it's not on by default. I have to run the program for it to passively protect my computer. Avast was working fine, up until a few days ago (not sure what happened a few days ago). After stating this, should I repair?
To Pondus: Before buying this computer, I carefully screened free antivirus software. It came down to this and Microsoft Security Essentials. I opted for this and have only used this. I removed everything that was initially installed. I did not use the official removal tool that is down there. Instead I used Revo Uninstaller. However, I'm not sure what the official software that came with the computer was. I will check that. If it was Norton ( I think it's norton, I have a Lenovo Thinkpad), should I use that website?