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When I try to upgrade my Dell Inspiron 1501 laptop I lose network connectivity. I get a message that says "Disconnected - You are now offline". When I open the network window it says "no network hardware connected". I have tried to upgrade three times and keep having to restart and go back to earlier version. I cannot connect through wire or wireless.

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Please, add the Ubuntu version to your question by editing it. Also, provide screenshots of the upgrade process (upload them to some image hosting site and share the links with us). –  edwin Aug 4 '13 at 22:31
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