Have you ever received the message in League of Legends, "no internet found?" Receiving this message simply means your client is having trouble connecting to the game's servers. If you keep seeing this message upon startup of League of Legends, here are a few things you can try to fix the problem.
First, check your internet connection. If you don't have an internet connection, you won't be able to connect to Riot's servers. To check your internet connection, look at the bottom right of your monitor. There's an internet access tab that should show how strong your connection is.
League of Legends No Internet Found: How to Fix
If you have an internet connection, the second thing to do is to check the League of Legends server status. The server status can be seen here. Sometimes the Riot servers will go offline for maintenance. If that is the case, the Riot Servers will be down for a short time, meaning you won't be able to use any online features.
If the servers are still active, the last thing to try is reinstalling League of Legends on your computer. There could be a problem with the way the program downloaded, stopping you from going online. Reinstalling will reset your programs ability to connect to the Riot servers.