I lost my AVG settings password. I now can't delete the application. Its been lingering on my pc, actively running and Its slowing my pc

I lost my AVG settings password. I now can’t delete the application. It’s been lingering on my PC, actively running, and it’s slowing my PC. How can I delete the application? I have a better antivirus, and AVG is now useless on my pc. AVG? Please jailbreak my account. I’ve used several application uninstallers and none of them work.