play station portable 1001 freezes

Hello I have a play station portable 1001

And I have been playing game s on it the last few days (NCAA FOOTBALL 07) AND TODAY THE GAME FROZE WHILE LOADING THE NATIONAL CHAMPIONSHIP (BAMA VS MIAMI) I NEVER GOT TO PLAY. NOW THE PSP FREEZES IN THE XMB MENU IF I EVEN MAKE IT TO THE GWME THAT NEVER LOADS I NEED TO KNOW WHAT TO DO, THANKS