Problem connecting wireless network

[PATIENCE]

I have two pc (1 port and a wifi Office ), It work very well in my home wifi. yesterday my father bring me his laptop and when I started everything, the wifi works, I find the Internet, I connected to mine, enter the wep key and then after a few minutes of research tells me it "impossible to connect to preferred network" . I don't know whats wrong, I have to be connected by wire to put it on the internet, not really great with a laptop.

Can someone help me ?

Thanks

[Jax.S]

You must have a MAC address filtering. You gotta put your box together WIFI or enter the MAC address of the PC laptop to your father directly in Administration mode of Box.

[Marco-D]

On your box you need to have a small button that turns off for 10 or 15 min by filtering MAC addresses (MAC addresses are unique addresses that can identify network equipment). You like what Box? On the Livebox you or behind a button below that makes it possible to fashion association. Box on the other must be the same system.

[PATIENCE]

Hey thanks for reply friends. I made a mistake in noting the key (I put 0 instead of D "). Now it's working.