Question : How can I make my laptop detect my wireless  network again?

I have wired/wireless network at home. Two days ago, I normally shutdown my laptop and headed for school (I do this four times a week), and when I came home and attempted to use it, it could not detect my wireless connection. My son and daughter also use the wireless network, and their connection is working fine. Nothing has changed in my network, and nothing has changed in my laptop (no programs have been added or removed).
There is one public wireless network (unsecured), that appears as being available, but not my own. I have cable connection to the internet, and I use a Sonicwall Wireless 170 for my network environment.
I did ask Sonicwall for support just to be sure, but of course nothing is wrong there.
I don't know where to begin, specially because nothing has changed in the equipment involved.

Thank you,

Nelson

Answer : How can I make my laptop detect my wireless  network again?

just install the program that come with the wireless adaptor

it will ask you the question about  windows or itself managing it