Hisisapop

I cant load into a world,It just stops at Generating terrain/Building Terrain

Launcher Version: 7.2.6 Operating System: HP Pavilion G Series Laptop Java Version: Dunno Antivirus Program: AVG Description of Problem: When the game starts up all i have is just a blank screen for the game,And the launcher doesent close,Ive never had this happen before. Error Messages: None Error Log: None