Laptop wont boot after migrating os form HDD to SSD  

NavyLCDR said:

As long as your current Windows 7 is fully licensed, if the upgrade to Windows 10 is asking for a product key then you are trying to upgrade to the wrong edition of Windows 10. You can tell if the Windows 7 is licensed by opening a command prompt as administrator and running:
slmgr /dlv

The reason the product key on the label is different than the product key shown by Showkey Plus is because the installed product key is likely from the factory installed Windows 7, which uses a matching system with a marker (not a product key) stored in BIOS. That type of product key can only be used to re-install the factory image of Windows 7 onto the make/model computer it was created for. The product key on the COA label is an OEM Windows 7 product key which you could use to install a generic Windows 7, not specific to that make/model computer, so long as the edition matched the product key (and the edition should be printed on the COA label) such as Home, Home Premium, Pro.

Attachment 207180

I checked per your instructions and indeed the copy of windows 7 in the laptop is Licensed. Also the last 4 digits of windows keys agree with the keys from showkey as well as the .vbs script for checking windows keys. So I should use this key instead of the one printed at the back of the laptop in case windows asks. I can always click on have key during installation and hopefully windows 10 will find it.

sportflyer said:

I checked per your instructions and indeed the copy of windows 7 in the laptop is Licensed. Also the last 4 digits of windows keys agree with the keys from showkey as well as the .vbs script for checking windows keys. So I should use this key instead of the one printed at the back of the laptop in case windows asks. I can always click on have key during installation and hopefully windows 10 will find it.

If Windows 10 is asking for a product key during an upgrade from Windows 7, then entering the Windows 7 product keys you have will not help because you are trying to upgrade to a different edition of Windows 10 that does not match what is currently installed with Windows 7, such as trying to upgrade from Windows 7 Home to Windows 10 Pro.

Why not just write down all the Windows 7 product keys you are finding, and what edition they are for? They will either be accepted by Windows 10 or they won't.

But, again, if you are upgrading an installed and licensed Windows 7 to the matching edition of Windows 10, it will not ask for a product key. If it does, something is wrong.

The current MCT will create an ISO file containing just about every edition of Windows 10 that a Windows 7 would upgrade to. If you run setup.exe from that mounted ISO file (or a USB flash drive created from it), it will automatically pick the correct edition of Windows 10 to upgrade to based upon the installed Windows 7 and not ask for a product key for the upgrade. The product key for the resulting Windows 10 installation will be a generic key and be the same as millions of other digitally licensed Windows 10 installations:
Generic Product Keys to Install Windows 10 Editions | Windows 10 Tutorials

I will be using windows 10 Home Premium 64 bit edition because that is the matching for windows 7 installed on the laptop. Thanks for all the help