Launcher (Mojang) wont load

Hello, 

Every time I load up my Minecraft launcher its fine. However, when I press play and Mojang pops up on the screen it stops at the same spot every time and crashes. It then goes back to the launcher screen and says there is a problem that occurs (a crash) but doesn't tell me what to do. I have updated all my drivers, restarted my computer, uninstalled the game, deleted it in my folder, all multiple times and still the same thing happens. Please help!