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I am facing a weird problem recently. When I reboot my computer with the LAN cable plugged in, it's connected and everything works fine. But when I remove the cable and plug it in again, it detects LAN but shows no internet access (And in 1 or 2 cases, it didn't detect LAN too).

Each time I plug out my LAN cable I have to reboot my system to get connected again. I even tried disabling and re-enabling the LAN adapter, but the problem still persists. My OS is Windows 7. Can someone help me out on this?

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have you tried disabling power management on the nic? if you run 'ipconfig /renew' does that have any impact? have you tried a static IP? – Frank Thomas Dec 6 '12 at 14:53
@FrankThomas We use static ip's only in our college. Each LAN cable is assigned a static IP. ipconfig /renew has no effect. & how to disable power management on the nic? – gopi1410 Dec 6 '12 at 15:40
from netowrk center, select 'change adapter settings' and right click the interface you want -> Properties. then click the Configure button. go to the Power Management tab, and you should see a checkbox. the exact text depends on your NIC driver software. – Frank Thomas Dec 6 '12 at 15:54
@FrankThomas: ah, thanks. That worked :) – gopi1410 Dec 11 '12 at 18:54

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