Ok, hang in there, let me understand the situation: It always sometimes does it? Is that 30%, 60% OR 100% OF THE TIME? When you say OPEN, do you mean start, or PHYSICALLY OPENING THE CASE? I am sorry, but you have not explained what "TRICKS" you have applied, so we cannot eliminate possible causes. Your changing a password is not going to hang a PC, so what else could you have changed?