My sister-in-law's laptop was agonizingly slow and full of pop ups and redirects. Every so often she would ask me to see what I could do, and I would go in and delete the obvious stuff. Last month I ran into 2 programs that would not let me delete them and the computer would not let me download malwarebytes. The next time I went to see her I put a few programs I thought might help on a flash drive. I can't remember now what order I did things in but I installed AVG Antivirus, Malwarebytes,...
Network issues after running Malwarebytes
Network issues after running Malwarebytes