Assassin Creed freeze in ps3

When i was playing Assassin Creed memory block 5 and all of a sudden the game froze . i had no clue what to do i turn it off and on Now my PS3 won't even read any games. No matter what game disc I put into the system nothing happens. It doesn't read the disc im in really big problem here . my ps3 is just 3 month old please help .

The same thing happened to my ps3. I was playing PES 2008 and it crashed. So i reset the ps3 and now it doesnt load any discs. I would rather know of a solution to fix this cos if you send it to sony they will give you a refurbished one.