You may use any disc (OEM, retail, upgrade, VL) with Windows 7. You can download a copy of Windows 7 and use your key, as you are attempting to do. You do not have to purchase any special Windows 7 media once you have a valid Windows 7 Home Premium key on the back of your laptop. I tried both keys but both failed to work.īelow here are useful information for your reference: I checked the product key, and encountered another problem: the product key shown by Everest and the key on the underside of the laptop do not match. I tried to activate this, but I got a message: "The Windows 7 Home Premium product key you typed is invalid for activation". However I realized there might be a problem: Start -> My Comp -> properties -> Windows Activation, there was a message: "15 days to activate. During the re-install process I typed my product key. I downloaded an ISO of Windows 7 Home Premium from the Windows website and made a clean install on my Lenovo IdeaPad Y580.īefore re-installing I made a screenshot of my product key, which was shown by a key finder.
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