Can't connect to the internet

I have a lenovo u510 and I can't use the internet. However, I do think that the windows mail is working. My screen shows that I have all the bars to the internet, but it won't load any web pages. Itunes store doesn't work either. My internet is fine. I'm using it now on another computer. It was working last night before I went to bed. I woke up today and boom. It stopped working for no reason. I have tried to go to the run and type in a few things. No luck so far.

Help! Please e specific because I'm not really good with computers. I appreciate all the help I can get.

Added (1). I'm using internet explorer and google chrome. When I go to a page it says. This page can't be displayed. For chrome it says… Unable to connect to the internet

Ipconfig /Flushdns

Let me know if that fixes your probz

All Laptop computers by default are set to Limited Access on the wireless, which means you will have a connection and then you won't, like a Yo Yo. They need to be set to a permanent connection. Open network connections, open properties of the wireless and enable it. Close the menus and reboot. Now the connection is permanent.