Why am I unable to connect to my wi-fi, if the router is working?

Last night, I was able to connect to the Internet. I left my netbook on for about a half hour so I could do something. In the mean time it updated automatically (windows update). When I came back, I was unable to connect to the Internet. I know my wi-fi is working because I'm able to connect via my iPhone, however my netbook is not detecting any wi-fi connections around. In an attempt to fix it, I tried to restore the windows to an earlier time but it did not work. Would someone know what is wrong and what I could do to fix it? If it helps, I'm using a Samsung NC10 with windows XP. Any help offered is appreciated.

Uninstall and reinstall the drivers for your Wi-Fi adapter (you will need to harline to the router to do so), that should resolve the issue. Also, have you tried restarting the computer yet?

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