Can I install windows 7 professional on multiple computers?

[magicman1234]

I already installed windows 7 pro on my old computer, but it broke. Is there any sort of DRM on the windows 7 cd's? I'm not very sure....

[Demache]

Yes. But just call them to reactivate it on the new PC.

[Gishank]

I assume this is a retail-copy of Windows 7 Pro & not an OEM copy?

To activate it on the new PC you will need to use the "phone-activation" system and basically hold on till a real person answers. At which point explain the situation and they will unlock the copy and provide you with a response code to enter which'll activate your copy of Windows.