hi
the next time it happens and it will,pull the complete control panel and lower board out
they slide out toghter..
then look on the board for 2 flashing light's,if the are not lite ? that is a power-supply or board fault,if they are both flashing's both game is still frooze,that is either hard drive or power supply..
what color is your board red or green ?
and i will post u on the 2 led's
ed