this is my configuration and your comments
i agreeTurn on User Account Control.
i agree tooUninstall Iobit Advanced Systemcare Pro.
will not be a bad thingRecommend you download AdwCleaner and Malwarebytes Anti Malware as on demand scanners.
he uses Coccoc; a Vietnamese chromium-based browser designed especially by and for Vietnamese-speaking users.As for web browser we meant something like Internet Explorer, Google Chrome,Mozilla Firefox, etc.... not website URL.
Oh...........i was confuse when he put cocco.com in web browser.he uses Coccoc; a Vietnamese chromium-based browser designed especially by and for Vietnamese-speaking users.
The Watchdog Anti Malware license work on Zemana Anti Malware as well, i tried that on my mom laptop and it's accept Watchdog Anti Malware license key.As @user102 said, turn on UAC. You listed your knowledge as Basic, had an infection last month, and download malware samples.
Perhaps start off by having a virtual machine for malware testing and secure the base system first before start playing with malware samples.
Read through some configurations to get some ideas on some security steps to take.
You also listed avast as on demand but use as RT Watchdog. Also, rather use Zemana as opposed to Watchdog but if you already purchased, nothing much to say, since you might as well use it until your license expires.
I agree use Watchdog license in Zemana and get rid of Watchdog, it says you have avast! Internet Security as an on-demand scanner, I assume you mean you have disabled it, re-enable it it will work WITH Watchdog and Zemana also check this out for settings for avast! High security settings for avast! without impacting performanceThe Watchdog Anti Malware license work on Zemana Anti Malware as well, i tried that on my mom laptop and it's accept Watchdog Anti Malware license key.