This article provides the instructions on determining if Windows is 32-bit or 64-bit.

Windows Vista or Windows 7

  1. Go to Start Menu > Control Panel > click on System.
  2. The operating system will display as follows for system type
    • 32-bit Operating system
    • 64-bit Operating system

Windows XP

  1. Right-click on My Computer (either Desktop or Start Menu) and select Properties
  2. Click the General tab, the version is listed under System
    • 32-bit Windows will display if it is Home or Professional, and nothing else
    • 64-bit Windows will specifically display x64 Edition