I have an old 60gig PS3 that is crashing in games after only a few minutes of playing.
I've Backed up and then restored, rebuilt the database, checked for dust bunnies and made sure the vents are clear (it's in the open now) and formatted the hard disk, all to no avail. All cables are plugged in, blu-ray film playback is fine, but on games the screen completely freezes, although game music will continue to play. The only way to gain functionality again is a complete rewrite