Internet explorer, google chrome and mozilla firefox not working?

[Shah]

I'm currently using Windows 8.1 and I recently downloaded McAfee from pirate bay. After i set it up i went back on to chrome and tried downloading something else then it said unable to access the network however the internet on my phone was working fine and it was connected to the exact same broadband. Then i tried IE it said this page cannot be displayed. Then i used Safari and it was working perfectly. Then i downloaded firefox to check if it was working with that and that didn't work too. So if anyone has any solutions on how to fix it please answer this question!!!

[Jordan]

If you don't have any protection on your computer, I wouldn't suggest downloading anything from piratebay.
Downloading anything off of a torrent website isn't a good idea unless you know what you're doing.
Restart your computer, uninstall McAfee.
Download Avast... the website below is also well trusted.

Good luck