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Windows 7: Can't use my product key-urgent!

20 Feb 2012   #1

Windows 7
Can't use my product key-urgent!

I needed to install a new hard drive in a computer, and I used my Windows 7 cd to install the OS, however, when I got to the Product key, I used the correct one but it won't accept it. I found that that can happen if you install from an upgrade disk, which I did (I thought it was the full program), and it said that I should upgrade from XP or Vista. I have my old XP disk, but when I reboot from the CD I get the Blue Screen of Death. If I restart normally, Win 7 is still there, but what will happen if the product key doesn't work? Will I only be able to use it temporarily? What can I do???

My System SpecsSystem Spec
20 Feb 2012   #2
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8

I think best is if you get in touch with Microsoft here: Activation and registration of a Microsoft product
My System SpecsSystem Spec
20 Feb 2012   #3

64-bit Windows 10 Pro

Hello Labecs,

You might see if using OPTION THREE in the tutorial below may help with this. If not, then you'll need to format the HDD to start over using OPTION FOUR in the tutorial below.

Clean Install with a Upgrade Windows 7 Version

Hope this helps,
My System SpecsSystem Spec

20 Feb 2012   #4


The disks are the same, upgrade or full. It is the key which determines whether it will activate.

It will reject the Upgrade version key on a new or cleaned HD since it sees no OS on the HD. Leave the key blank, then after install do the quick registry workaround given in Brink's tutorial above.
My System SpecsSystem Spec
22 Feb 2012   #5

Microsoft Community Contributor Award Recipient


For HP Pavillion

You can Order HP Recovery Disks from here:
Compaq Mini CQ10-500 PC series*-* HP Notebook PCs - Order Recovery Discs for Windows 7, Vista, or XP - c00810334 - HP Business Support Center

information   Information
We always assume you have made your Recovery Disks using the OEM manufacturer's Recovery Media Creator app the first day you had your new PC.
& made the Startup Repair CD.
startup repair disc-create

Did you make the OEM manufacturer's Recovery Disks?
My System SpecsSystem Spec
22 Feb 2012   #6

Windows 7 Ultimate SP1 64-Bit

If you don't fancy editing the registry, just install Windows without entering a product key, and then install again.

The second install will see the first one as the qualifier for the upgrade and will accept your product key the second time round.
My System SpecsSystem Spec
22 Feb 2012   #7

Windows 7

Thank you all!! The tutorial worked great
My System SpecsSystem Spec
22 Feb 2012   #8

Windows 7 Ultimate SP1 64-Bit

You're very welcome and thanks for the update.
My System SpecsSystem Spec
22 Feb 2012   #9

64-bit Windows 10 Pro

You're most welcome Labecs. I'm glad that we could help.
My System SpecsSystem Spec

 Can't use my product key-urgent!

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