Problem with the Minecraft Launcher?

I'm having problems with my minecraft launcher. Every time that I press the play button on the launcher, it loads it like normal and then goes to the Mojang screen. Then the moment it gets to this screen it stops loading and immediately goes back to the launcher screen. Is this something to do with my processor or launcher, or etc.

It should be a problem with the client, try deleting.minecraft and reinstalling the client, remember to backup any saves or texture packs before deleting it though.