El Capitan 10.11.3 update done but the problem now

Yesterday I updated my mac mini to El Capitan 10.11.3,, but I've had the problem now. My very strange internet actions, that some web sites are displayed at the same time, some people need a lot of time to load, some even several minutes, some of them don't charge at all. It doesn't matter what browser I use, chrome, firefox or safari. Even if I want to go to my router to manage to 192.168.1.1 I got the login screen, I connect but then I got black screen, no data to manage my cisco router. If I work on my Lenovo laptop with windows 10 there are now problems with internet and I can go to my router and manage it without problem :-(

What do I need to reinstall ESET?

Tags: Mac OS & System Software

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