Re: The buzzing noise
I take it you've since learned to speak "user".
I wouldnt even trust a user to know what a hard drive was, never mind diagnose one by sound alone with sufficient conviction to ring I.T
I'd be all like: "Yeah? well when it goes give me a ring and we'll replace it , and I dont want to hear that all your documents were stored on your desktop , when you have a centralised , secure , and most importantly -backed up , Home drive.