Windows 10: Product key Validation

Have had this PC for ages & all of a sudden after turning on today a msg appears in the bottom right corner "This copy of windows is not genuine",Windows7 build 7601. In the System prop where your product Key is Activate Windows. The problem is why after using this PC would a message come up Now? as been over 4 - 5 months I`ve had in my possession &was acquired from our PC repair shop as 2nd hand machine??, am thinking that this is a Virus waiting to be opened.. PLease can anyone help me as this is urgent

:)

 

Valid Win7 Product Key not accepted by Win 10 upgrade

Hi,

I did not realise I had been at all vague, my apologies.

Unfortunately my neighbour now has his laptop back as I got nowhere. I have suggested he wait until the windows 10 upgrade system makes it available through windows update (it is in the queue).

As stated, I have tried running from the media created by the media creation tool to a USB (this is what I used to successfully upgrade my laptop and surface Pro). I have also run the media creation tool and opted for it to upgrade directly rather than save the files.

The operating system is Win7 Home premium OEM version. The key is valid and I re-validated it to be sure with the MS online actvation system. The laptop is 64-bit.

On each occasion it goes through the initial install steps and then gets to the screen where it asks for the product key.

On this screen there is no skip option and as the product key is not accepted, the only option is to cancel the install.

For some reason the upgrade seems to be taking a different path on this machine and does not give the skip option.

Regards
Mike

 

windows 10 says it can't validate product key

When I upgraded my windows 7 with win10, it says it cant validate my product key? Why? Can you give me the steps to follow to validate it?

 

product key valid?

f I purchase Windows 7 how long is the product key valid?