How to get norton off my pc

kiku555555

Honorable
Mar 2, 2012
1
0
10,510
Hello,
norton renewed my antivirus without my authorization, & now my pc is running barely, really bad & slow. I would like them to fix it, but after reading about this same problem online & that they have crashed peoples pc's, I'm now afraid for them to touch my pc.
So how do I get them completly out of my system & should i go to avast.com?