Resolved Can't see my wireless Router

I can no longer see my router in the next room, from my notebook, I can and connect to routers outside my house, or using my nokia phone. I have two another laptops which connect without problems. I have tried standing next to the router with the notebook.

It use to show up in my wireless connection as a opinons to connect.

I'm using
Packard bell
Intel Atom PRocessor N280
250GB HDD
1 GB Memory
windows 7
IE9
Belkin router N

Please and thanks for any help.

 

Thanks Tony
Yes its enable on the router, I can see and connect my other laptop, just the notebook won't connect.

I believe it may be settings or confirmration on the notebook, just dont want to make it worst.