My first All-In-One Computer Repair

This day has been coming, a call from somebody with a new All-In-One Windows Computer.  I've been waiting and dreading this day.  Only because I knew whatever Windows based computer would not be as elegant as an iMac, probably just as complicated  to fix and just a general pain.  I must admit though after dealing with an HP model, I am impressed with the built-in diagnostics tools that it has.  It almost fixes itself.  This is good as the hardware design makes it almost impossible to open.  Who's next?