If Game Assist is not working check the following:
- If the screen is blank - are you sure you're connected to the internet? Try going to settings and pressing "reconnect to PVP.NET"
- If your game can't be found, did you try the "retry button"? The game needs to start, you can't pull up the game info while in queue.
- If the game can't be found, are you sure your summoner name is set correctly in the settings?