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I have a Dell M4500 that does not connect to the internet. I have called Dell and they have replaced the motherboard but it does not work. They told me that it is a software problem. It suddenly stopped working, both the cable and wireless card.

The SIM card work and I can connect to internet with that. The LAN card is active but the computer symbol in the right bottom corner is having the read cross over it. When I try ipconfig the only card that is listed is the SIM and bluetooth. There must be another solutiuon to this than reinstalling.

How can I fix this without reinstalling Win 7? It is like the PC does not recognize the cards anymore...

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Did you check device manager to see if the drivers have any errors/updates? – user142485 Aug 16 '12 at 15:53
Yes, no errors. – Andy Aug 16 '12 at 16:01
What does the network troubleshooter say? – user142485 Aug 16 '12 at 16:07
I assume you are using windows? – terdon Aug 16 '12 at 16:09
Yes, it is Windows 7. The troubleshooter says that it can't fix it. – Andy Aug 16 '12 at 16:14

first of all, try reinstalling the wireless driver. You can get it from here.

If that fixes it, then great.

If not, try downloading a linux live disk (any of Ubuntu, LinuxMint, Knoppix etc) and boot into a live linux session (just put the cd in your drive and restart your pc). Once in the linux session, if you can connect/see wireless networks you know that it is not a hardware problem and you should be able to find a software solution in windows.

On my m4500, LinuxMint detects the wireless card automatically so if it does not in your case it probably means you have a hardware problem and you need to lean on Dell.

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