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Wireless Network Connection

I am unable to connect to the internet using my wireless connection.  When I try to connect wirelessly it connects to the network but not the internet. And when it connects to the network it can not identify it. It just says unidentified network. No internet access. When I try the trouble shooter i get the error: wireless network connection does not have a vaild IP.  I have reset the router and I know the modem is working because I am connected to the internet when I plug in to my network and connect localy.
What should I try next?  Thanks
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btdownloads7
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First of all, which OS are you using?

And second, there are a few possibilities for what's causing the error:
1. The router is going bad or needs a reset. Try unplugging the power from your router and then plugging it back in.  Try connecting another device wirelessly using the same key and see if it works.
2. You could be using the wrong wireless key. Are you absolutely sure that the one you entered is correct? Again, try connecting another device wirelessly using the same key and see if it works
3. There could be a problem with the computer itself (wireless card, drivers, or the OS), and that rewuires a whole bunch more troubleshooting steps.
A couple of things may be going on here.  If you are connecting, does your Access Point hand out IP addresses (DHCP) ?  If it does, maybe you have a static IP address configured for your wireless card.  

Depending on what operating system you have, you need to go to the properties of the wireless card and make sure you have Obtain and IP address option selected for IP address and DNS.  This only matters if the Access Point gives you an IP address.  If it does not, write down the IP address you have when you are connected with the wired connection.  Disconnect from the wired connection and give the same values for the Wireless card installed.  You will probably get an error if the OS recognizes that the same IP address is already configured on the wired NIC if you are using static IP addresses.

If this does not work, make sure your Wireless drivers are up to date.  Sometimes a Wifi card can connect to the access point but not complete the initialization process because of out of date drivers and the access point expecting a certain way of handshaking to the WiFi card.  

Also, to eliminate the card being bad and help troubleshoot the WiFi portion of your setup, if you have a laptop, go to a place that has free wifi access and see if you can connect.  This will atleast help pinpoint where the actual problem is, card or access point.
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ASKER

This is an office network and we have multiple laptops that connect wirelessly as well as wired. They have all been using the same connection and key for a long time.
I have unpluged the wired connection on another laptop and get the same error.  I have tried to connect using a personal laptop and am sure i have typed the key in correctly, and still the same error.
I have reset the netowork card in the laptop, I have reset the router and also the modem. Still the same error.  
We are all running windows 7 and the server is running windows server 2003. The only thing i can think of out of the ordinary is that we had all of our systems shut down over the holidays. Could something have gotten reset?
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btdownloads7
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ASKER

We have another router in the office that connects to the same network. (it is at the other end of the building), It uses the same key and when I try to connect using that router I also get:  Unidentified network, Wireless has no vaild ID.  
Does that confirm what you are thinking? or mean that it is something else?  I wouldn't think that both routers would be fried.
I would assume that one router is just a bridge for the other, so that if the "main" router is having a problem, so would everything else downstream. But then again, if you are typing in the wrong network key, you'd have the same problem on both router, too. So you still have to log into the router(s) and check or rest the wireless key.
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ASKER

In the end we had to manually connect directly to the router and reset the whole thing. So I am not sure exactly what the problem was but that fixed it.
Thanks for your help