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Here's microsoft's Italy store,
Windows 7 Home Premium versione aggiornamento – Acquista e scarica da Microsoft Store Italia
Here's microsoft's Italy store,
Windows 7 Home Premium versione aggiornamento – Acquista e scarica da Microsoft Store Italia
It's a question of (legal) semantics but in this case - your case - it's the latter 25 character key which you would require for activation.The 20 character Product *ID* is created during the installation
process and is prominently displayed towards the bottom (in the
Activation section) on the opening panel window resulting from
right-clicking the Computer icon and selecting "Properties" from the
context menu. It is used to obtain/qualify for technical support
(limited though that may be) from Microsoft; it is of no use during the
installation process.
The 25 character Product *Key* is used to "prove" ownership of a
legitimate license and is required to perform the installation, and is
either stored on the DVD packaging on a sticker that says "Do not lose
this number," or is on a Certificate of Authenticity (CoA) label affixed
to an OEM computer.
Difference between Windows 7 Product Key and Product I.D.
You can use the rearm command up to 3 times after resetting activation with the repair install, as long as it is done before 30 days expires.
This will give you time to shop for Home Premium at a good price, as you only need the key. Be careful buying from 3rd parties, though. Best to get a sealed retail copy from a reputable retailer.
I'm shopping for HP key for a friend right now in the states and it doesn't seem to get cheaper than $102 retail. Wish i would have bought up a bunch of the pre-sales or family pack at half that price.