Playstation 3 Wont Play Blu Ray Movies or Ps3 Games Any Idea How to Fix It?

this is just all of the sudden, we turn it off and on and take the disc out and put it back and it just never shows up. help!

Suggestion:

My friend has an old 60 gig and his started doing this. He was about to buy a new lens but he decided to take the PS3 apart first and clean the lens…it worked and he didnt have to spend any money. He said it was covered in dust.