64 bit - Is my Windows 7 x86 license key valid for a x64 installation of Windows?

I've just got a new laptop with Windows 7 x86 Home Premium installed, however I ideally I'd like to be running a 64-bit operating system:

• Is my Windows license key "generic" (in that it entitles me to install either a x86 or x64 edition of Windows), or does this licence key specific to the x86 version of Windows?




• Is there any way of me installing and running Windows 7 Home Premium x64 using my x86 license key?

Answer

Yes your Windows 7 key works for both x32 and x64 versions of Home Premium.

Source: Microsoft eOpen only provides 1 key per purchase, regardless of how many computers you have or which architecture (x32/x64) you are using. Furthermore, Microsoft TechNet subscribers get 10 keys for each flavor of Windows 7 (Home Premium, Professional, Ultimate, etc.) These keys can be used to install on either architecture.