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I live with three friends, and we often sit in the living room with our laptops. There’s a WiFi router in the kitchen, and we have quite a stable connection.

The issue however, is that sometimes, all of a sudden one of my friends will lose their Internet connection. Even disconnecting and reconnecting to the WiFi network does not help. When we restart the router, it works like a charm for everybody.

The odd thing is, it happens just for this one Windows 7 laptop. We’ve switched routers (for a different reason) in the mean time, but the issue remained. This makes me suspect the laptop even more.

I realize that I’ve given few details, but I don’t really know what to do or try. Any suggestions what it might be or how to fix it?

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Can you clarify what you mean by "loses connection?" Does it stay connected to the router? Can it ping the router? Lose connection completely? Just lose DNS? etc? – ernie Nov 29 '12 at 22:45
He complains about losing internet connection, but I'll check this afternoon if he can actually ping the router when it drops. I believe he once said he couldn't restart the router via the web UI, so that would mean he'd lose connection to the router. I'll verify and elaborate. Thanks! – Joost Nov 30 '12 at 6:31
What model and hardware version are the routers? – Synetech Dec 2 '12 at 1:32

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I'd suggest hard coding IP addresses first. If this doesn't help the issue, try changing the channel your WiFi is on.

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If the router were having trouble assigning IP addresses, they wouldn't have gotten a connection in the first place. If it were a channel problem all the connections would go down. – Isaac Rabinovitch Nov 30 '12 at 0:16
Exactly. He's getting an assignment, since there's a stable connection at first. – Joost Nov 30 '12 at 6:30

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