Win7 ISO image

No it wasn't.
Is the OEM from using a key finder which would end up showing a OEM/SLP key used by the manufacture, which will not work.
Or is it the OEM key found on the Microsoft sticker. Two completely different OEM keys.

I know that Microsoft will refuse the OEM/SLP key but I don't know if they will refuse the key on their own sticker.

Well I don't that to be true is the reason I was asking. Which for what ever reason seem to bother you.

Because I have read many post the state their OEM key doesn't work but none of the post that I read stated where they got the OEM key from. Did the key come from the MGADiag log or maybe a keyfinder or the Microsoft sticker. All three place would be OEM but the sticker would be a different key number. I don't know if the sticker key number works or not.

I not understanding why the Microsoft sticker key doesn't work for these reasons.

If one has OEM Builders or Retail keys they would not need the download because like me they would already have the DVD that comes with the keys.

So I'm thinking the Microsoft download must be meant for those that bought a pre installed system and they should be able to use the COA key off the Microsoft sticker on the computer. Why else would Microsoft have that download site?

OEM Builders people already have a Windows 7 DVD that came with a COA key.
Retail people already have a Windows 7 DVD that came with a COA key.

I think there is a difference (or was) between OEM keys. This is my understanding:
Differences Between OEM Channel SLP, NONSLP and COA License Product Keys « My Digital Life

I have no idea if MS are accepting OEM:COA anymore - they should be accepting these sticker identified keys. These keys should allow you to do a true clean install.

Of course Microsoft know what the key is from.

Lets try it another way.
If a OEM Builders key come with a DVD and a Retail key come with a DVD how what is left.

Let me guess.
It's the people with a store bought system that is activated with a OEM/SLP key but also has a different OEM key on the Microsoft sticker but they have no DVD with Windows 7.

Out of the three users, OEM builders, Retail or store bought computers which one needs the Microsoft download.
OEM Builders don't need the download.
Retail don't need the download.
Only the people who have a store bought computer with a pre installed Windows 7 need the download. The Microsoft download must be meant for them. If that is true I don't understand why the Microsoft sticker key doesn't work.
I'm trying to verify that it doesn't work. The ones that fail might be getting the key from the wrong place.

This information might just come in hand for people that have store bought computers with Windows 7 pre installed.

I have no evil intentions with this information.