watching a simpsons box set, had watched a few on the last disk. Turned the ps3 on and now it wont load the dvd. It had been working fine on that exact disk earlier. Screen now just goes black and then back to main menu. Iv tried turning everything off and tried using other disks from the box set and other random dvds and they all work fine. Any ideas? this is really annoying! oh, when i put the disk in or click to start it, the screen goes black, then the symbol of the spinning radar type disk is at the top right corner, then a triangle with "options" appears botttom right, then just goes back to main menu, any help appreciated.