Problem de Internal Server Error

Bonjour,
j'ai eu un nouveau projet et quand je l'ai exécuter avec Wamp Server j'ai eu ce messahe comme resultat

Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, admin@localhost and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

et je sais pas comment resoudre ce problem pour que je puisse mettre a jour ce projet :( aider moi!!!!!!!!!!!!!!!!!!!!!
<config>Windows 7 / Safari 535.7</config>