Ps2 we were playing last night when all of a sudden the playstation just shut itself off and now won't turn back on it has power but won't read the disk what do we do to fix this problem?

You say it wont turn back on but it has power.
is the light red ( stand by )
or do you have green and blue lights
Did it fall????
try cleaning the disk and the lens
you can also run the auto diagnosis..

HERE'S HOW
Auto-Diagnosis (PlayStation 2 system) 1. Turn on the system without a disc inside. 2. Once at the Main Menu, press the triangle button to enter the Version Information Screen. 3. Highlight the "Console" option, and then press the triangle button again. 4. Next, press the X button, highlight "On", and then press the X button once more. 5. Now press the circle button twice to return to the Main Menu. 6. Press the eject button on the front of the console, and insert a disc. 7. Now close the disc tray, but DO NOT reset the system. 8. Highlight the Browser option from the Main Menu, and then press the X button. 9. In the Browser, an icon of the disc should appear on the screen. Highlight this icon, and then press the X button to read the disc. 10. If the auto-diagnosis is successful, the disc should load properly at this point. NOTE: The auto-diagnosis feature will return to "Off" the next time a disc is inserted.


the above is a copyright of the PS2 user guide