it says i'm offline but im not, thus preventing me from logging in

Okay, So I'm trying to login but it says I'm not connected but I am connected. This all started when I was trying to play on a server and it said that I was not connected to the internet but I was, so I tried restarting my computer it still didn't let me on the server I uninstalling Minecraft, and now it will not let me log back in even though I'm connected it says it's not. I've reset my password so I know I'm doing the right password