Hello,
I have a nice Dell Latitude E4300 which came preinstalled with Windows Vista Business and have Vista Business COA. However I got a Windows 7 Professional Dell OEM DVD iso and made a fresh install and I want to upgrade it to windows 10 (even registered for a free upgrade).
System of course was automatically activated with OEM Slic 2.1 certificate and have passed sucessfully all windows test and apperars as a Genuinue Microsoft product.
I don't have any windows 7 coa key then and im curious if i can do upgrade from vista to 7 like that on my own.
I have to admit I am pretty sure this laptop was made during free vista to windows 7 upgrade action.
I am a third or even fourth owner of this laptop and when vista to win7 upgrade was going on this laptop was probably in some business company and no one cared about free upgrade because it had to be a full time working machine.