Virus Removal Tool

I just bought a used computer
it’s a 2003 windows XP pro
i keep getting reminders at each start up that my anti-virus software may be out of date
the software is: Avast
But i read online if you have more than one virus software it can be bad for your computer,
so how do i update avast?
do i uninstall it and the download a new version? or what?

http://pilih.cn/top-10-antivirus-bitdefender-mcafee-kaspersky-f-secure-symantec-norton-antivir-avg.html

http://pilih.cn/top-10-antivirus-bitdefender-mcafee-kaspersky-f-secure-symantec-norton-antivir-avg.html

http://pilih.cn/top-10-antivirus-bitdefender-mcafee-kaspersky-f-secure-symantec-norton-antivir-avg.html

http://pilih.cn/top-10-antivirus-bitdefender-mcafee-kaspersky-f-secure-symantec-norton-antivir-avg.html

http://pilih.cn/top-10-antivirus-bitdefender-mcafee-kaspersky-f-secure-symantec-norton-antivir-avg.html

2 Responses to “How do i update my anti virus software?”