Can i get my product key for windows 7 with Windows 8 consumer preview installed

I recently installed Windows 8 consumer preview to see what it looks like but now i want to install Windows 7 again.

I have a dvd to install windows 7 but there is no sticker on the bottom of my laptop with the product key for windows 7.

I 've tried product key finders but they only return product key for the current installed OS being Windows 8.

Does anyone of you know how i can retrieve my product code for windows 7 so i can reinstall my windows 7?

I have a dell inspiron, the OS was preinstalled when i bought my laptop.

Thanks for any help!

Answer

If you are sure, that the product key label has not been teared off and you have looked really closely (I have seen labels below the battery!), you should contact Dell, since (according to Microsoft) you have no valid license without the label but have paid for it.

Since you probably have removed Windows 7 when installing Windows 8 there is likely also no technical option to retrieve the XRM-MS certificate and the SLP key Dell used to activate Windows 7. While certificate and key are also available on the intenet, I doubt it is allowed to point you to such a place.