How can I upgrade a Windows 7 trail version?

I had Vista Home Premium. Was having would freeze, a lot. Took it to a repair place. They told me the motherboard was "going". I asked them to wipe the HD clean so I could possibly sell the computer for parts. I get the computer back, and it has a 90 day version of Windows 7 Pro on it. And the computer works fine. So I use the computer for three months, and more, but I need to activate Windows 7 Pro. I have no key and I don't want to go back to the replair place. So, what do I need to buy, to be legal? And where should I buy it? And will I lose everything again when I install? signs of motherboard problems at this point so I'm thinking the guy just was wrong...I'm willing to take the gamble, anyway, and buy Windows 7...
Question Info

Last updated March 20, 2018 Views 406 Applies to:
 it has a 90 day version of Windows 7 Pro on it.

Are you sure it's Pro? There is a Windows 7 Enterprise 90-day Trial. If you have the Windows 7 Enterprise 90-day Trial you would have to backup everything and completely reinstall.

To buy Windows 7:

If you have a Vista license for the computer you can buy the Upgrade.



Have Questions About Installing Windows 7?
FAQ - Common Windows 7 Installation Questions & Answers
MCC 2011


Sharing bits of knowledge.

Did this solve your problem?

Sorry this didn't help.

Great! Thanks for marking this as the answer.

How satisfied are you with this reply?

Thanks for your feedback, it helps us improve the site.

How satisfied are you with this response?

Thanks for your feedback.