The laptop is not detecting any wireless network because the hardware wireless switch is off. Actually, that can be turned on through its utility, the Intel Proset/Wireless Connection Utility but as I have seen on your screenshot it is already activated but it’s still not detecting anything. So we need to locate where the hardware wireless switch is.
Have you checked the side panel of your laptop?
How about at the front part?
How about the part above the function keys?
Have you seen any wi-fi symbol there? Check if you can locate any buttons. If there is none press Fn and F2 at the same time.
If you are using a laptop, the hardware radio switch that the message is referring to is the Wi-Fi button. The Wi-Fi button on the laptop disables and enables its Wi-Fi connectivity. This prevents your laptop from connecting to a Wi-Fi network or a Wi-Fi hotspot. In an Acer laptop, the Wi-Fi radio button is indicated by a satellite dish.
The button has an LED indicator that blinks when the laptop’s Wi-Fi connectivity is enabled. If the LED indicator is off, it means the laptop’s Wi-Fi connectivity is disabled and it cannot connect to a Wi-Fi network. If you have a WiMAX wireless network adapter and it indicates the Wi-Fi radio button is off, simply press the Wi-Fi button on your laptop to turn it on.