Wired LAN not working but wireless is?

So my girlfriend's apartment gets internet service through Pavlov Media, and has both wired and wireless options. I had my desktop plugged into the wired LAN through the wall outlet, but then I unplugged it to connect to Xbox live. My Xbox recognized the wired connection but would not connect, and wouldn't even get past the networking phase. I tried plugging my desktop back in, and it didn't work either. The odd thing is that the wireless still works on my laptop. When I tried the devices both of their MAC addresses were registered with Pavlov so I don't think that is the problem. I was wondering if by chance there is any way there could be a problem with the outlet or if there is anything I should try.

Thanks in advance for the help,

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Wired LAN , wireless LAN

Well, for wired connection , you need to setup first in order to use , set the ip address , speed , in about:config etc , which specifies the LAN specification. then only u can go ahead. , but for wireless , its not required since its plug and play like.

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(NT) Sorry, but this seems nonsense.
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Same is happening

It is much better to understand different connectivity so that later it will not be a problem for us knowing it. Also, sometime it happens that cable creates problem in connection and in that case, working on wireless will be much better.

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Wall socket?

When you say you plugged into the wall socket, do you mean your router?
If your plugging straight into the wall then you will need a modem and router (assuming you've got broadband).

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