After playing a youtube video, browser can't connect to websites

Hi, I'm new here but can anyone know the fix to my problem?

I don't know when this problem started, but i noticed that when i play a youtube video, my browser can't connect to any websites. My computer have internet connection but can't connect to a website after i play a youtube video. I can play online games, connect yo yahoo messenger and connect to steambut can't connect to the internet. Can anyone help me please. Im using chrome and firefox.