Launcher Crash -.-

Hello Guys... My Minecraft Crashes since 4 days ago... I try everything...
delete minecraft... %appdata%... java... pc-Graphics... Yes, I've got the original version of MC and i've got not one mod in my mc... (sry for my bad englisch o_O) it crashes and it was very pesky... one point it is... I was unban y a server some days ago and now I can't play this game... and yes I reset my PC. efore my MC was without one problem, but after that my MC crashes everytime...

'hope somebody can help me ;(