As to numbers to call MSFT, that's on the web but let's keep this simple. Windows 7 still comes on DVD with a package and code. If there is no DVD, package and code then it's too likely it's not a legit version.
So, let's check that basic item. Do you have the Windows 7 DVD and packaging?
I just had Windows 7 reinstalled on my computer when it was brought into the shop and I took it home and tried to upgrade it to Window's 10 but I can't because Window's 7 isn't even activated... I tried the activate now option in the control panel but it say's invalid code to activate. Cyberworks (the place I brought it to) would not have use a fraudulent key and I called them and they said they will take care of it for no charge if I bring it in but I was wondering if that is the only way... it has been in the shop and out of my hands for long enough, I don't know a # to call to Microsoft for this or what to even say... I do know what the code in my win registry says however. Please help if you can, even if that help is telling me I have no choice but to bring it back in.

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