How To Know Windows Is 32bit or 64bit??? And Which Type Of OS???

How to find Your Windows Runs In 32 Bit or 64 Bit Operating System 

And 

Which Type of Operating System You Have Been Installed In Your's Computer

First Click Start Button 





In a Computer Session Press Right Click In Your Mouse

In There Select Properties 

OR

On Desktop  Select  My Computer and  Right Click On It

There's Select Properties 

After It's Shows You Which Type Of Operating System You Have Been Installed 
On The System Type Shows Your's Windows Runs In 32 Bit OR 64 Bit Operating System