Microsoft tech troubleshooter extraordinaire Gov Maharaj suggests on Channel9:
Look at all the Panther Logs for such machines. If need be, zip $windows.~bt\sources\panther to Microsoft Support.
Take a look at Windows 10 Installation or Upgrade Errors and Troubleshoot Windows 10 Setup and Installation Errors for additional suggestions.Upgrade your BIOS on old machines. Uninstall Nero, and all ATI\AMD software, and ASUS VGA driver, PC-Wizard, SpywareBlaster, Virtual clone drive,Spybot, ASR Appcharger, CCleaner, InstantBoot, Logitech camera driver and then run the Windows 10 upgrade.