Dashboard Box turns into Login Window

Hello again, problem still unresolved.

I login, then go to the dashboard. All Dashboard box are the login window (https://i51.tinypic.com/9h2qua.jpg). Then when i click on anything.. it redirects me https://(my website)/wp-login.php?redirect_to=http%3A%2F%2Flp-motion.net%2Fwp-admin%2Fedit.php&reauth=1 . I cannot do anything without it telling me to log in again and again. HELP!!!