I have a problem and been attempting to upgrade since December of last year. Regardless of the method it always stops at 83% and then fails. It just gives a generic error now in a popup: Windows 10 Installation has failed.
See image below:
I have tried updating via the following means multiple times:
Media Creation Tool
mouting the ISO directly on my hard drive
burning the ISO/Windows 1607 to a DVD
I also ran system file check, DISM, windows trouble shooter. System file check and DISM did manage to fix some issues but not enough to allow a successful update. Those options can be found here:
I removed everything in the C:\Windows\SoftwareDistribution folder. In fact, I renamed my C:\Windows\SoftwareDistribution to SoftwareDistribution.old and attempted all the options above again. I also recently updated my BIOS to A.038 from A0.27 even though the BIOS upgrade mostly applied to the later Graphics card. Although, it had some security enhances per the details off HP's page.
In addition, I tried all the options above after disconnecting all peripherals except my keyboard, mouse and monitor. This included internal hard drives, speakers, printer, UPS and disabling my card reader driver and performing a clean boot with all Windows/start up programs diasbled. And it still fails @ 83% but just gets there quicker since it doesn't have all the other stuff to contend with.
In short, I have just about exhausted all my options so it would be interesting to see what recommendations are given here. The only thing I have yet to try is yanking the NVIDIA GTX970 and running my monitor off one of the HDMI ports before attempting the upgrade. I've seen a few reports about graphics cards interferring with Win 1607 upgrades. Oh, I'm also conveniently out of my warranty peroid (slightly over a year) which I find entertaining to say the least. Not that I think it's an HP problem but like others my Dell and Toshiba PCs upgraded just fine using Windows update so...