As it actually connects now you've clearly solved the problem of the SSID but you've now got a totally unsecured network which means it is wide open to any passing hacker who fancies using your bandwidth to download his porn and take over your computers to turn them into net bots.
You must get that sorted straight away by setting up WPA(PSK), switching off broadcast SSID, changing the network name and changing the router's admin password.
When you've done all that try changing the channel through which the router connects to the PCs.
--------------------
Do you know that we're all in line for succession to the throne? Really?
Well, if forty-eight million, two hundred thousand, seven hundred and one people died I'd be Queen.