Bought a HP 3500 pro desktop with W8pro/ downgraded to W7pro. Had a Samsung Evo 840 ssd installed and made as the boot disk. Stupidly, I did not have the recovery disks made. And yes, I know I should have made them.
The machine was fine for a while, until the SSD borked. Then I found out the 840-series does that rather regularly.
Figured that I just put another SSD in and reinstall the OS. But then I noticed the thing does not come with a Windows sticker?
Googling told me the windows product key is in the BIOS. OK, I found it with a bit of searching.
So, I downloaded the Windows 8.1 pro ISO, put it on an USB-stick. Booted up just fine. Then it asked for the windows product key for the installation. I entered the one from the BIOS. Did not work.
So where do I get the working product key for the new OS installation?