Internet connection problems can be caused by many different things. The most common are network mis – configurations, hardware or software errors in the router, latency from your Internet Service Provider, incorrect IP address configuration, incorrect connection of network cables, firewall applications that block http traffic from your PC or temporary timeouts your ISP.
Check that the Wi-Fi is enabled on your computer – laptops often have a button, switch or Function key combination somewhere on your computer or keyboard.
Check that the network icon on your computer is connected or if there is a yellow warning signal or it is disabled. If it is connected, call your network provider or get hold on someone with more knowledge on IT.
If Wi-Fi is disabled, you must check whether the cable is connected properly or if wifi is not on. If there is a yellow warning, you must reboot the router. If this does not work, try pressing Start in Windows XP, Vista or 7 and typing “cmd” into the search box and click enter.
Then a black box pops up where you can type “ipconfig / release” then “ipconfig / renew”. If the internet is not working now, call your ISP.