Internet not working for some computers after snow storm?

[Ariel]

There was a snow storm about 3 days ago, we got 7-9 inches of snow and my internet had stopped working. We have a few computers in our house, some are connected to the router, other ones are wireless. My computer and my brothers, which were both connected to the router by a cord, are working fine. My mothers computer, who is wireless, is also fine. But my sisters computer who is also wireless isn't working. The router name isn't even coming up. It won't come up on any of our phones, ps3/xboxes, and its kind of annoying. Please help by saying any suggestions!! Help appreciated!
We've already tried to restart the router.

[555]

Restart the router.
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