Wireless Adapter Cannot Find Any Wireless Networks

Hi,
I have a problem with my Wireless Network Adapter. As the picture shows below (cannot post image yet), although my Wireless Network Adapter is not connected to the Internet (no red X next to it), but it looks like connected!
I've tried to enable/disable it, but no luck. I tried to re-install the driver, but the same!
So, what's the problem?
Notes: 
- OS: Windows 7 installed in Toshiba laptop.
- WiFi Adapter is Intel, supports 802.11a/g/Draft-N.
- WiFi Adapter appears normally in Device Manager (no marks).

Thanks guys for your answers.
To clarify the issue, the network adapter isn't connected to Internet, but it seems to be connected (don't know connected to what!)
When I run the command "netsh interface show interface" in the command prompt, it displays:
Admin State State
Type Interface Name
Enabled    Connected
       Dedicated
Wireless Network Connection
So, it let me be confused, what Network this Wifi adapter is connected to?!!

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