Check Device Manager for Network Adapters and see if there's a ? or ! next to the entries there. If so, you need to go to the manufacturer's web site and download the driver for it.
Good luck.
my nephew has a dell inspiron N7110 with windows 7.. the kid did a factory restore? on the laptop. i was able to reload windows 7 but now he has no internet access. i cant figure this one out! please help?

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