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So this seems like a router problem, but it started happening since I installed Windows 7.

I often lose the network (networking icon gets exclamation mark) and need to reboot my router which fixes the problem temporarily.

I am using the Cisco Linksys router WRT160N V3.

Running Windows 7 Ultimate N 64 bit.

Also, rebooting solves the problem, so it's probably not a router issue.

The computer is connected to the router via cable.

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Wired or wireless? – SgtOJ Dec 3 '10 at 12:21
    
An additional note: If you're doing torrents or something to that effect that generates a ton of connections, I have seen linksys routers puke on that. There are a couple of steps to take that can help if this is the case. – RobotHumans Dec 3 '10 at 12:57
    
Do you only use a wired connection or do you have a wireless adapter enabled (although not in use) as well? – Tog Dec 4 '10 at 16:01
up vote 1 down vote accepted

If it happened at the exact time of installing Windows 7, it most likely is down to a driver problem (please try updating your network drivers).

Do any other computers loose connections? IF the answer is no, it is obviously just your machine - another solution may be to try and disconnect and reconnect the network cable.

If driver doesn't help, I would recommend trying to disable Home Group and IPv6 on your machine as I have seen his causing a few problems in the past with older routers.

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update - just read, your router is not that old at all, but I would still recommend the steps I wrote. – William Hilsum Dec 3 '10 at 12:24
    
homegroup disabled. which drivers should i update, for my NIC ? – Sonic Soul Dec 3 '10 at 12:39
    
yes, pretty sure the NIC driver is what he's suggesting – RobotHumans Dec 3 '10 at 12:56

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