Is your PC running the 32-bit or 64-bit version of Windows?
Follow the step in the section below to determine whether your PC running the 32-bit or 64-bit version of Windows.
Computers running Windows XP
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Click Start, right-click My Computer, and then click Properties.
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If “x64 Edition” is listed under System, you’re running the 64-bit version of Windows XP.
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If you don’t see “x64 Edition” listed under System, you’re running the 32-bit version of Windows XP.
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Computers running other versions of windows
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Click the Start button, right-click Computer, and then click Properties.
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If “64-bit Operating System” is listed next to System type, you’re running the 64-bit version of Windows
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If “32-bit Operating System” is listed next to System type, you’re running the 32-bit version of Windows
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