Phone does not recognise wifi

[AC Question]

I am having Samsung Galaxy GT - S7562. It was working fine on my home Wi-Fi.
Couple of days back my mobile started saying 'To see available networks, turn on Wi-Fi'. If I add my SSID, the message is 'Not in range'.
Please help.

 

[B. Diddy]

Welcome to Android Central! Try rebooting your router. See other tips here: http://forums.androidcentral.com/am...roubleshooting-wi-fi-connection-problems.html