OEM on OEM

[revned911]

I have an OEM version of vista installed when I built my computer. I want to upgrade to Win7 Professional - the OEM on newegg is cheaper than the upgrade disc. Can I install OEM Windows 7 on my system with an OEM Vista already installed?

 

[The_Prophecy]

Yes, you should be able to run the upgrade from Vista to 7 with an OEM disk. OEM copies are exactly the same as the full retail copies with 2 exceptions.

First, OEM copies only have either a 32 bit install disk, or a 64 bit install disk in the package (depending on which one you buy), but not both. Second, OEM licenses cannot be moved to a new PC if you upgrade your computer, or buy a new one. They must remain with the original PC you installed them on.

 

[paranoidmage]

You can't build a new computer and use an upgrade disc to install the OS anyway though, so just buy the cheaper OEM disc.

 

[The_Prophecy]

the OP isn't building a new computer... he/she installed an OEM copy of Vista when the computer was built.