Machine works fine but for some reason you if you plug any USB into the back ports other than the keyboard and mouse or it will not boot.  In my case when I tried to plug my external backup drive into the USB ports it would not boot.  But If I plugged it in after booting up it worked fine.  Tech support told me it is the power supply which I'm not convinced it is.  For the price it is useful for basic computing needs.  I'm using mine for a music server.