Hi there,
I bought my Inspiron 7437 in Dec 2013 in the US (I live in the UK and it is impossible for me to reach the US customer support) and I still have the original box with all that came with it, there was no disc (as there is no disc drive on the 7437) or anythihg with Microsoft product key. I upgraded it to 8.1 immediately without problems.
Now for a year, I have problems with OneDrive not syncing and Microsoft support suggested I upgrade to Windows 10, but they said that to do it, I need "Windows 8 product key" and "ISO files" that "usually come on a CD with the laptop". I am in contact with Microsoft support, we continue the process, they work on my machine remotely.
I don't have neither the key nor the ISO files because nothing came with the laptop originally. Perhaps it is possible to upgrade to Windows 10 without Windows 10 product key and the ISO files (I haven't tried) BUT, I want to do it as Microsoft support tells me because they are trying to resolve my OneDrive issue.
Pls can anyone suggest how do I get the Windows 8 product key and ISO files?