Hello I hope that you are well,
Okay, it is a simple enough task - I need to validate my Windows 7 operating system. The Windows update process says that the key isn't valid for its purposes. The Computer is refurbished. We are using the key off the label on the side of the machine. Is there some place on the Microsoft website, or someplace on the computer itself to validate the OS?
You have three options:
Activate by phone
Contact customer support for help
If that doesn't work; Activate By Phone- provide them with the key assuming it is the same OS on the tag and they can issue you a new activation code. They have an automated system and it's pretty fast.