[CLIENT] My client won't open!!!!

My computer shut down and restarted on its own today while my client was open, and when it restarted, my client won't open anymore!!! it sits with the logo in the middle of the screen doing nothing!!!!! i tried to reinstall, but at the end of the installation, you have to open the client, and it still happens, even after i completely reinstalled!!!! PLEASE PLEASE help!!!!!!

EDIT This also happens then I attempt to open my PBE Client!!!!!*