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W7 not genuine software installed - but not according to "genuine software"

W7 not genuine software shows - but the system shows that it is registered and I cannot even put in the new product key microsoft gave me.
It is genuine (Lenovo T400 thinkpad) but of course I cannot now get updates.

This problem appeared some time after upgrading my HDD.
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Not sure if this will help but is an idea...

Try finding the edition using this at command line:

dism /online /Get-CurrentEdition

Use the above info to retrieve the current edition.  Use the current edition and your key to do the following to reset the key:

Dism /online /Set-Edition:XXRetrievedEditionXX /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX

This should reset the key.  Might require a reboot but should be back to normal afterwards.
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Hi, Sounds good but the prompt "elevated permissions required". I am the administrator of the machine, so is there something else I should be doing to get the correct pernmission level to run dism/online/Get-CurrentEdition?
Thanks. Stuart
Turn off uac by typing   uac   at start menu or type    Cmd    right click command line and select    run as administrator. That should give you proper permissions
That works. Thanks
Running the Get-current edition returns nothing
"Image version is : 6.1.7601.17514
Current Edition is:
Current edition is : professional"

I cannot read the original key as it is partially erased on the bottom of my laptop.
Microsoft gave me a new key (knowing that my machine is a Lenovo T400), can I enter this key or is it dangerous if it is not the original key?

Thanks. Stuart
Professional is what you will want to enter for the edition. You will want to use the key from Microsoft if your key is not available.

Should look like this

Dism /online /Set-Edition:Professional /ProductKey:XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
Doesn't work even with admin rights.

Attached is the Dos screen (with key removed, of course)

Any ideas to get the key inserted? Thanks. Stuart
I don't see the attachment.  Did you turn off the UAC entirely just run as administrator?
I ran as an administrator (only). I will reboot with UAC off, but, judging from the screen shot (re-attached) do you think that is a real source of the problem?
I'll give it a try anyhow.

Thanks again.Stuart
I am still missing the screenshot.  That error will help.

UAC has caused me so many issues with regards to management that I turn it off before doing anything else.  Rather be safe than sorry :)
Here is the screenshot.
Try using one of these keys.  They are the volume licensing keys put out by microsoft good for 3 days:
Windows 7 Professional – FJ82H-XT6CR-J8D7P-XQJJ2-GPDD4
Windows 7 Professional – MRPKT-YTG23-K7D7T-X2JMM-QY7MG

You might be able to get those to go first and then be able to change to the other key.  I am still looking to see if I can find something on that error.
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Well, thanks for taking me down this rather long road. If you do find a patch or other idea, please do let me know on sharris @ and we can pick it up again on experts-exchange.
Meanwhile, many thanks for going through this with me.