One Step Forward

I got a referral to one of the client's computer tech's who does work on the side.  He came to my apartment (on a Sunday even!) and fiddled with it -- and was a bit puzzled by the way it's acting.  He says it might be a faulty power supply, and he asked me to bring it to work, where he can test the power supply.  I just dropped it off there (figuring lunchtime would be appropriate -- and since I doubt he's here when I arrive at 5:30 a.m.).  I hope, whatever the issue is, it's an easy fix.

Now how many steps back?