Someone gave me their old pc for free, and it has 32 bit windows 7 on it. I'd like to install 64 bit windows 7, but need to know if the existing product key will work or if I will need to buy a new one.
d. Multi use scenarios.
(i) Multiple versions. If when acquiring the software you were provided with multiple versions (such as 32-bit and 64-bit versions), you may install and activate only one of those versions at a time.