Yes, it's under security center.
Is a system software
It is advisable for you to only install 1 antivirus software in one PC. If you happen to install 2 antivirus software in 1 PC and your system hangs, that is because the system is confused and the antivirus software is fighting for dominance. You should remove one of the antivirus and if you want to change to a different antivirus, you must un-install the previous one.
avast
It`s an application software, because you can download it.There isn`t operating system with installed AV.
Yes, it's under security center.
This means your anti virus software is not working properly . You need to reinstall your antivirus software or install a new one.
You can find antivirus software on searches for free. I recommend searching Trend Micro. This is a security system that enables you to browse the web for free.
antivirus software
Mirror is nothing utility in antivirus software
i am only 10, but i know you can
Go to www.pctools.com.
Antivirus software is indispensible for preventing, identifying and eliminating malicious software programs, such as Trojans, worms and spyware. This software blocks and intercepts attacks before they can access your computer and private information or affect the system's performance. It is important to use antivirus software from a reputable company because there are several malware programs that appear to be authentic. The antivirus program should be intuitive and not interfere with the operation of your computer.