I have an Ideapad Y400 notebook with Windows 7 connecting to the network with a D-Link DIR-601 router and occasionally when I come back to my laptop the network connection is lost. I try re-connecting, forgetting the network and reconnecting, but nothing works unless I reset the router. Once I've reset the router everything works fine again. Sometimes it works for multiple days and sometimes for only a few hours. All my drivers are up to date and I always keep Windows Updates installed. Has anyone else experienced this issue before and had it resolved.
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