Upgrade oem window7 premium to professional

[radhegaj]

Hello,I have purchased a laptop with preinstalled windows7 premium but now I want to upgrade my os to professional. So please tell me how is it possible?

 

[clarkjd]

Buy a Windows Anytime upgrade.

 

[Gumption]

What carkjd said. There is no difference between an oem and an rtm, so just choose the anytime upgrade.