I recently was experiencing a lot of pop-ups so I decided to download a different virus protection called "avast". But stupid me, I forgot to uninstall my old virus protection software(Norton) and now my computer automatically turned off the virus protection. I’m not sure what to do? Is there a way to turn it back on? Do I have to uninstall ‘avast’?

plz help!!!!!!!?

ok, my computer will not load anything, no sound, no drives, nothing but the desktop. it will open widows and software. norton auto protect was shut off not by me, and it wont turn back on. the internet wont load, my widows restore points were erased. it is not on diagnostic mode, for i have checked that a million times. what could be the problem? i admit i was on a site i shouldn’t have been on, and some how i contracted a trojan. but this trojan i removed manually in diagnostic mode. how can i fix it?????
and i tryed rebooting 3 times
MY INTERNET DOESNT WORK. IU CANT DOWNLOAD ANYTHING.

I recently was experiencing a lot of pop-ups so I decided to download a different virus protection called "avast". But stupid me, I forgot to uninstall my old virus protection software(Norton) and now my computer automatically turned off the virus protection. I'm not sure what to do? Is there a way to turn it back on? Do I have to uninstall 'avast'?
If I need to uninstall norton, how do i do it?