Hi,
I have a new elitebook 840 G1. Preinstalled on the machine I have Windows 7 Pro. I want to upgrade to Windows 8 from the recovery DVD that shipped with it. There is no optical drive shipped with it but I used an mobile harddrive with YUMI and an ISO of the recovery dvd.
I can boot from it without a problem but when the recovery setup loads after the Window 8 logo I get following error:
The unattend anwser file contains an invalid product key. Either remove the invalid key or provide a valid product key in the unattend awnser file to proceed with Windows installation.
Can somebody give me some tips how I can solve this issue? I tought the it was the secure boot option. But I can't change the value in the bios because it is marked gray. I already changed all secure value to "Change" but can't get further.