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Wireless Unable to get an IP Address or Internet Conection

Posted on 2009-07-09
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Last Modified: 2012-06-27
HI All:

I have a Dell Vostro 1400 and can not retrieve an ip address via wireless connection. This started happening yesterday, until then it was working fine.  I have two wireless computers and the other is working fine. I have a Belkin N1 and all blue lights are on.

Here's the situation, I am able to connect to the wireless router just fine and I have a strong signal, however no ip and no internet access.

Can't ipcong/release because it says it's already been released and no operation can be performed while disconnected.

/renew says an error occurred while renewing interface Wireless Network Connection 2: unable to contact your DHCP server.. request has timed out.

I've tried the Winsock fix with no luck either.

I have all firewalls and internet virus programs disabled too.  

I've triend using Window's wireless connection with no luck either.  And both windows and Dell have the wireless icon below with the yellow fot endlessly searching. Dell has a feature that has a "Site Monitor" which endlessly searches through all channels unable to connect.

I ran Malwarebytes and came back clean.

I uninstalled and reinstalled the wireless drivers.

Could it be a hardware issue?  
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Question by:Anthony_MX
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by:astrochimp
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I'm assuming you've tried rebooting your wireless router.
 
 Someone else will probably post detailed steps, but here's something to try really quick:
 
 Look up the IP address info from the other laptop by running 'ipconfig/all' and set the address information manually on the problematic laptop. This way you'll be able to narrow the problematic area. Also, check out the IP address pool of the router. If could be set to 1 address lease for some reason.
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by:Anthony_MX
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Thank you, Astrochimp. Yes, router and modem have been rebooted. I also tried as static IP and same results. Need to check the IP address pool of the rooter.  

On the other computer, the one that works, every so often it gives me an error that there is another computer in the network using the same IP address or IP address comflict. I right click the wireless icon and select repair.  Not sure if this helps.  The router by the way is secured.

Thanks again for you suggestions.  
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by:astrochimp
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How is the address pool setup on the router? What is the range? Change the range to around 10 addresses in a different part of the same range and do an 'ipconfig/renew' on both computers

For example if you currently have

Router IP: 192.168.0.1
Subnet mask: 255.255.255.0
DHCP Range: 192.168.0.100 to 192.168.0.150

You want to change the last setting to something like

192.168.0.50 to 192.168.0.60

Before you do anything else, however, make sure that the currently working laptop does not have a static IP address set. It sounds like there is something on your network (i.e. desktop connected with ethernet cable) that's throwing a wrench into your wireless wheels, so to speak. Make sure that nothing is set to have a static IP, or if it is set, it is out of the automatic DHCP range.
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by:mbeckerman44
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If your DHCP scope is setup correctly on your router. Go to the computer you are trying to connect.
Open your windows wireless connection and make sure your security key is correct. I believe you said this is a secure router. If your key is not correct you will not get your IP address.

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by:Anthony_MX
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Under DHCP, the range is from 2 to 100
No Static ip, TCP is set to obtain ip auto
I've reset the router to factory. No key required. It's a Belkin NI Wireless Router.
The currently working wreless computer is also set to abtain ip auto.

Again, I see the router from the non internet working laptop just fine, but can not connect to internet with that computer nor can I obtain an IP address. It just keeps searching. Also, I connected physically to the modem itself with the laptop, and same results, I still can not connect to the internet. The router also indicates that it has internet connection.  I don't think it's the router at all. I was on the phone with comcast, and they can see me just fine too, plus the other computer also works fine.  I think I may have a series networking issue with this laptop. A physical problem.  Can that be possible?  If I can not get access to the internet wireless or hard wired, I've got a series conflict going on. Is there a way to reset the configuration entirely for networking on the laptop?

Thank you both again for your input and ideas.    
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Anthony_MX earned 0 total points
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Guys:

Thanks again for your help. Got so frustrated that I just refomatted  the hard drive and reinstalled Windows XP.

Problem solved!  

Thanks again!  
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