Computer laptop everything suddenly does not "see" my wireless router, use to work properly

I have a HP laptop and it has implemented a wireless network a wireless d-Link N router.  Everything worked well for about 3 months.  Now, he can not connect.  Running the troubleshooting application to choose a connection - all my neighbors show up, but not that of my house.  The router is also new (he and laptop were Christmas gifts).   It used to work fine with Windows 7 one and now nothing...  I can't it appears in the list of wireless connections.
My laptop 5 years running XP is in line with this router and it works fine - so I don't think that it is the router that is the problem.
Thank you!

Hello Bchek,

Thank you for your message.  Check with your D-Link documentation and settings to make sure that the SSID broadcast has not been disabled.  This would prevent you from being able to see the wireless network.  Please let us know if it did or did not help to solve your problem.
See you soon

Engineer Jason Microsoft Support answers visit our Microsoft answers feedback Forum and let us know what you think.

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