Black Loggin Screen

when im starting the client ,after the loading screen just appears the loggin and the screen is black so i cant enter username and pw pls help

It's an install problem, u need to reinstall Pintos and try again ~

i re installed it, too anyway it doesnt work, if you got no other way to solve this problem im going to uninstall it and lf another p server which works, thats all-.-