Any idea of what may be wrong with "NINTENDO DS Lite",?

0647 - Need For Speed Carbon O, 31 Mbyte, EEPROM 64/51 2Kbit, Lastsave:2008/2/3-1140, AN7E, (PAGE (1/1).
Comes up when I turn it on but the games are blank, have just purchased a new battery thinking the battery is gone but no joy, innitializing fat also comes up when switched on