theyre not hard to fix but the fix will have to be done again and again over time. as far as your personal info and account activations once you switch out the harddrive with a new one should they get it up and running ( assuming someone buys it from you) the drive would reformat and your info wouldnt be on there anymore.

also just call customer service and tell them your ps3 died before you could deactivate the video/game service and they will do it for you.