Maybe the dvd drive died? If your warranty is still in place sony will fix it. But be prepared for about a bunch of people saying how crappy the PS2 is and made and stuff btw! Sorry I can't be of more ...

I was playing GT3 and i saved the game before i went to sleep. The next morning i try to load it and it says corrupt data. Now my problem isnt that i have to start over since i just restarted the game ...