My younger sister has been messing around on my old laptop which is an HP and has Windows 10 I believe. My Mac broke down and I need to finish up some homework for class so I went to use the laptop but it's says "can't connect to the proxy server" i already checked in my control panel and proxy is connected and no firewall is blocking the web address. My sister downloaded this thing called the "Charles proxy" recently could that have given the laptop a virus? If so, is there anyways to fix this? Or get rid of the virus if there is one. Thanks in advanced.