My pc was alredy upgraded to windows 7 home premium to professional
One of my pC has been purchased with Windows 7 Home premium in my office. it was upgraded to home Premium to professional. Due to BIos setting Corrupted i restored the system to previous version.the system taken the HOme premium only.How can i revert back to 7 Professional?
More aboutalredy upgraded windows home premium professional
upgrade it again to the pro version.
Use pro media and the pro key to reinstall.
If you have a legal Win 7 Pro license (product key), you may be able to perform a Windows Anytime Upgrade with that info.