Keeping computer safe from Keyloggers!

Hi I am new here and i wanted to know how does one know if there's a keylogger installed in his system or not. i have downloaded all in one keylogger and it's so good and even my antivirus or firewall can't see that. So is there any good way of knowing if a keylogger is installed in a system?

Thanks for helping me out!

Most programs are shows in the process list of Wondows Task Manager. Check Task Manager (enable "view all processes") on a regular basis if you think there's a keylogger on your pc.

Most of the keyloggers are detectable by antivirus and firewall, so always keep your antivirus and firewall installed and updated.