WiFi is working but there's no internet connection?

hello,I'm using Toshiba laptop satellite L745. there's one problem, my WiFi status shows that my laptop connected to the wireless connection, but when I open the internet browsers, it says that I didn't connect to the internet.

When you connect the Laptop to your WiFi network have you assign any IP address or the router has assigned any ip address, actually this depends on the router configuration. Once check router settings.

There may be limited access to number of devices, if you configured like this router will give access to some devices lets say 2 devices are connected to PC and if one of them is disconnected router will allow the other devices to use internet.

Once you need to check with the router whether the ISP line is connected to router or not? and if connected you may need to connect through dialer or PPPoE method. Once check with your ISP.

Some of the ISP's may does not support the Internet connection through router, they only provide the connectivity through switch here the Internet connects directly no authentication is required.

Once contact the ISP provider for better clarification.