Do you see any error messages on the screen or something?
Normally when a computer starts it looks for a device that it can boot from, and there are a series of pre-defined places that it will look at: the USB, CD/DVD (if there's any), any other external drives, the installed hard drive(s), etc.
The fact that it's not recognizing the installed hard drive may suggest the installation didn't go well. I've actually seen this happening with old device I also had with Z16, and I still haven't figure what caused it but I do get a message saying something like "no boot device found".
I still haven't tried it on my end but this post may be a solution: