My Galaxy Nexus detects wifi signal(at home) but can't connect to it My Galaxy Nexus detects wifi signal(at home) but can't connect to it.

I cant connect to wifi. The wifi icon doesnt appear beside the time on the upper right of the screen. When I try to access facebook it says connection lost. But wifi works properly well on the laptop.

I've switched the ON/OFF , restarted the galaxy Nexus and still nothing.

Please help.
A few things to try:


Ensure that the Wi-Fi network you are connecting to is an infrastructure mode (router) and not ad-hoc (shared connection via another phone or laptop) as Android doesn't support ad-hoc mode out of the box.
Disable the Avoid poor connections option under Settings -> Wi-Fi -> Menu -> Advanced.
On the same screen, switch the W-Fi frequency band from default "Auto" option to the one your router uses (2.4 GHz Vs. 5 GHz).
Check your router settings to ensure it's not filtering by MAC address.  If it is - either disable that option, or add your phone's MAC address to the list of allowed devices.
Check the settings on the Wifi network on the Settings -> Wi-Fi screen.  Long-press on the network you are trying to connect to, select Modify network, and check that the settings for Security are correct.
Try re-connecting fresh.  On the Settings -> Wi-Fi screen long-press the network you are trying to connect to and select Forget network option.  Try re-connecting to it.