Thread: Calibre doesn't open on this machine
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Old 07-25-2025, 08:44 PM   #37
DNSB
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Quote:
Originally Posted by JSWolf View Post
I have two valid Windows 10 Home licenses sitting on two hard drives. You can get the licenses from those drives without them having to be the active OS. One is from a laptop that died and the other is from my old crappy desktop that died. The desktop was replaced with a mini-PC running Windows 11 Pro. The laptop was replaced with the HP laptop I'm using now.
Though I spend most of career dealing with Microsoft's volume licensing, in my experience, manufacturer Windows 8.1+ OEM OS licenses are tied to the hardware with a key stored in the BIOS. Moving the hard drive to a new computer will require re-licensing. You can get the key from the BIOS using a PowerShell admin session and entering "wmic path SoftwareLicensingService get OA3xOriginalProductKey" on the command line.
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