Malwarebytes Anti-Malware Premium does
not include an AV component, so you'll need to install AV software too (they will
not conflict with each other):
https
/www.malwarebytes.com/antimalware/
I wouldn't choose AVG though, I don't rate it very highly at all, plus I've seen it cause considerable startup delays on some systems.
I've installed Avast Free on my wife's laptop as it's simple to use yet very effective:
https/www.avast.com/en-gb/index
On my laptop and desktop PC I'm using Comodo Internet Security (includes AV) 'cos I need something that's more user-configurable & it has comprehensive security features:
https/www.comodo.com/home/internet-security/free-internet-security.php?track=8234
Edit: Ralston18 is correct in saying that you shouldn't have two memory-resident AV softwares installed at the same time, but
Malwarebytes Anti-Malware Premium does
not have an AV component (read the description on their website) so it won't conflict with AV software.