How to tell 32 bit or 64 bit windows

It is pretty simple to tell if you have 32 or 64 bit operationg system in Windows 7 or Vista. Just click start then right click computer, see the two screen shots below. In second screen shot look at system type. You can click these images to see larger view. For Windows XP click start right click my computer then click properties, now take a look at third screenshot in the circled area if it does not say anything about 64 bit then you have 32 bit. As far as I know there is no 64 bit for XP home edition or XP media center edition. XP pro is the only one that could be 64 bit or 32 bit.

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