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2 Obtained additional windows information using a key finder so question not relevant anymore.
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I have Windows 7 running installed on my desktop on 1 hard drive. I have installed but not formatted a 120 Gb SS drive which will hold Windows 10. I have already downloaded the Win10 ISO using the Media Creation Tool, written it to a DVD and checked that it boots.

I plan to do an upgrade by booting from the ISO DVD, and let it "pick up" the product key from the Windows 7 installation.

But I have some uncertainty. EDITED: I orginally bought two supposedly retail copies of Windows. One I installed on a laptop (still in use) which I no longer have so cannot check the PK and the other I installed on my desktop. Neither purchased Product Keys contains "OEM". However I don't know which was installed where.

Problem is I checked in Control Panel: SystemMagical Jelly Bean Keyfinder and it says my Windows is activated butshows me the real Product Key shown there is not the same as eitherand Product ID, matching one of the two Win7 packages that I bought! How could this happen? It also contains the OEM stringpurchased.

Should I just go ahead with the upgrade anyway? Or What SYSTEM shows is there an option to input the PK later, and I can try one ofonly the other Product Keys I bought.ID! Or should I try and change the PK through the option in System, to oneThe rest of those I bought?

Aftermy question is now not relevant so am deleting. The bit above about the upgrade I planKeyfinder utility may be useful to then do a clean install of Windows 7 using the ISO DVD again.

Comments much appreciatedsome people.

I have Windows 7 running installed on my desktop on 1 hard drive. I have installed but not formatted a 120 Gb SS drive which will hold Windows 10. I have already downloaded the Win10 ISO using the Media Creation Tool, written it to a DVD and checked that it boots.

I plan to do an upgrade by booting from the ISO DVD, and let it "pick up" the product key from the Windows 7 installation.

But I have some uncertainty. I orginally bought two supposedly retail copies of Windows. One I installed on a laptop (still in use) which I no longer have so cannot check the PK and the other I installed on my desktop. Neither purchased Product Keys contains "OEM". However I don't know which was installed where.

Problem is I checked in Control Panel: System and it says my Windows is activated but the Product Key shown there is not the same as either of the two Win7 packages I bought! How could this happen? It also contains the OEM string.

Should I just go ahead with the upgrade anyway? Or is there an option to input the PK later, and I can try one of the other Product Keys I bought. Or should I try and change the PK through the option in System, to one of those I bought?

After the upgrade I plan to then do a clean install of Windows 7 using the ISO DVD again.

Comments much appreciated.

I have Windows 7 running installed on my desktop on 1 hard drive. I have installed but not formatted a 120 Gb SS drive which will hold Windows 10. I have already downloaded the Win10 ISO using the Media Creation Tool, written it to a DVD and checked that it boots.

I plan to do an upgrade by booting from the ISO DVD, and let it "pick up" the product key from the Windows 7 installation.

EDITED: I installed Magical Jelly Bean Keyfinder and it shows me the real Product Key and Product ID, matching one of the two packages that I purchased. What SYSTEM shows is only the Product ID! The rest of my question is now not relevant so am deleting. The bit above about the Keyfinder utility may be useful to some people.

1
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Advice re an upgrade from Windows 7 to Windows 10

I have Windows 7 running installed on my desktop on 1 hard drive. I have installed but not formatted a 120 Gb SS drive which will hold Windows 10. I have already downloaded the Win10 ISO using the Media Creation Tool, written it to a DVD and checked that it boots.

I plan to do an upgrade by booting from the ISO DVD, and let it "pick up" the product key from the Windows 7 installation.

But I have some uncertainty. I orginally bought two supposedly retail copies of Windows. One I installed on a laptop (still in use) which I no longer have so cannot check the PK and the other I installed on my desktop. Neither purchased Product Keys contains "OEM". However I don't know which was installed where.

Problem is I checked in Control Panel: System and it says my Windows is activated but the Product Key shown there is not the same as either of the two Win7 packages I bought! How could this happen? It also contains the OEM string.

Should I just go ahead with the upgrade anyway? Or is there an option to input the PK later, and I can try one of the other Product Keys I bought. Or should I try and change the PK through the option in System, to one of those I bought?

After the upgrade I plan to then do a clean install of Windows 7 using the ISO DVD again.

Comments much appreciated.