Minecraft won't launch.

I am having a very confusing problem. Whenever I try to play Minecraft, it doesn't work. I can open up my launcher 100% fine, but when I press play, and the "MOJANG" screen pops up, like how it always does... BUT it stays there FOREVER, it doesn't start Minecraft, or anything... it just stays there.. and if I click on it.. it says "(Not Responding)", then closes.

Please help me... I really want to play Minecraft, but I physically.. can not,

Sincerely, 

Trevon.

(BTW ALL VERSIONS WON'T WORK, BUT THAT WAS NOT AN OPTION IN THE "AFFECTS/VERSIONS"