My other half has an old iMac that she doesn't use anymore (actually barely ever did - she bought it for school work but didn't get on with making PowerPoint etc on it) and wants to sell. Problem is, she doesn't remember her password anymore, and she's the admin. There might be some photos or things on there that she wants (she's awful at backing things up and never knows where anything is) and she wants to get in to check, and reset it to factory before selling. Is there a way to do that? Or is it impossible without the password?