Can’t access Network Drive from Windows 7 ?

Hello Everyone,
I'm using Windows 7 on my office computer and we have a Network Drive which is named Public. I am not able to access the Network Drive from my computer. My computer OS is Windows 7.
I tried in several ways to access, but I can't do it. May I get a solution from any of you, to know how I can access my Network Drive from my Windows 7.
Regards,
Tawfiq
