You can do a two-way

First way

There is a “Computer” icon on the Desktop, right-click on that and select “Properties”, see image below

So, the System Properties Dialog will be open, and you can see under the System section, there is a property named “System type” and the value is “64-bit Operating System” (if it is a 32-bit version, operating system “32-bit Operating System”), see image below.

Second Way

Click on the Start button, see the image below

And type system in the Search program and file box, and then click System Information in the Programs list, see image below.

So, the System Information dialog will be open, and x64-based PC under value appears for the System type under Item. (If it is a 32-bit version operating system, the x86-based PC under value appears for the System type under Item.), See image below

Posted on April 17, 2014 by Amit Pandya in Windows7