DETERMINE IF YOU HAVE 64BIT OR 32BIT CPU

SOLUTION:-
If you're wanting to determine the version of Windows your computer is running follow the below steps for your version of Windows. Keep in mind that a 64-bit processor can be using either 32-bit or 64-bit version of Windows and that a 32-bit processor can only use a 32-bit version of Windows.

WINDOWS 7 OR VISTA USERS:- Right click on your computer icon on desktop or situated in start menu.
then click on PROPERTIES than you'll see this screen and find your CPU system type.
WINDOWS 7 USER:-

 WINDOWS VISTA:-

WINDOWS XP USER:-

Press and Hold the Windows Key and the Pause key or open the System icon in Control panel.

In the General tab of the System Properties window if your computer says Windows XP you're running the 32-bit version of Windows. If the computer is saying Windows XP Professional x64 Edition you're running the 64-bit version of Windows XP.

NOTE:- windows XP user should note that if you are running with 64bit type then in general tab it'll written as x64.
if nothing written there than you are using x86 (32bit) type CPU.

thank you :)