Dell :: Intel Centrino N 6205 Does Not Work On M6700

Feb 18, 2013

I have centrino N 6205 on my new Precision M6700...

Under both win 7 x64 (preinstalled dell) and 8 x64 on another hdd, there's no chance to have wifi working: I mean it does not work as normal wifi to connect to internet and it does not work not even a hotspot to let me connect for example my smarthphone to internet using wifi and a shared cable connection.The card seems to work, since I run a live fedora 18 distro linux from dvd and the wifi was able to connect pc to internet in less than one minute...

(of course I tried dell suggested drivers from download area, last updated intel drivers from intel website, etc etc...)...The wifi seemes to be correctly recognized in the pc but I get errors when I try to connect to router (I tried more than one routers that correctly work).

My system: D3ll Precision M6700| i7-3740QM| 32Gb 1866 mhz (4x8Gb)| 17.3" FHD IPS RGBLED 1920x1080| 8X DVD| K3000M| win8 x64 on Samsung 830 256gb| WD Black 500Gb 7200 rpm| 9 cells 97W| WIFI+BT Centrino N 6205 + Dell 380| QWERTY backlighted| psu 240w| warranty 3yr next business day|

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Mar 30, 2013

I just purchased a used Latitude E5420. It looked like the seller did a fresh reinstall of Windows just before selling it to me. The non-internet applications are working fine, but it's not connecting to my home wireless router. I have a  Buffalo WHR G-125. I tried pretty much every type of security type, but nothing worked, so I eventually disabled security and set up MAC filtering, after which I put in the MAC address for the laptop. That still didn't solve the problem.

It does connect to my neighbor's unsecured linksys network. Both the neighbor's network and mine are 802.11g

I went to Intel's website and installed the latest drivers for the network card, but that didn't work. I'm using the latest firmware on the router already.

Here are the specs for the laptop

Win 7 Professional 64-bit
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I have an XPS L502x laptop with an Intel Centrino Advanced-N 6230 wireless card with the latest driver 15.6.0.0.  For the past couple of weeks the strength of the signal as measured by the Intel proset tools goes from excellent to poor in the space of 60 seconds, back and forth.  It seems to do this on all channels from 1 to 13.  It definitely is affecting Internet performance.  I have the security set at WPA-Personal in an attempt to try and stabilise the network.  I have also been using iSSIDer to try and find the best channel since there are about 10 other wireless networks from other houses around me.  I have a D-Link 645 router which is admittedly about 10 metres and 2 or 3 walls away.  However, until a fortnight ago, the network was dead stable showing a strong signal (4 or 5 bars (-50).  Now it is all over the place.  Could it be a damaged card?

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I have attached an image of the ipconfig from the ASUS.

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router setting 1: [URL]
router setting 2: [URL]
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Jan 11, 2013

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Its “about” page reads:Cisco EPC3925 EuroDocsis 3.0 2-PORT Voice Gateway Model: Cisco EPC3925Vendor: CiscoHardware Revision: 1.0Bootloader Revision: 2.3.0_R1Current Software Revision: epc3925-E15-13-v302r125554-120725cFirmware Name: epc3925-E15-13-v302r125554-120725c.binFirmware Build Time: Jul 31 12:51:23 2012Cable Modem Status:OperationalWireless Network: EnableCable Modem State:DOCSIS Downstream Scanning: CompletedDOCSIS Ranging: CompletedDOCSIS DHCP: CompletedDOCSIS TFTP:CompletedDOCSIS Data Reg Complete: CompletedDOCSIS Privacy: DisabledDownstream Channels: Power Level: Signal to Noise Ratio:Channel 1: 5.9 dBmV 42.7 dBChannel 2: 6.7 dBmV 42.3 dBChannel 3: 6.4 dBmV 42.5 dBChannel 4: 6.2 dBmV 42.5 dBChannel 5: 6.0 dBmV 42.0 dBChannel 6: 5.5 dBmV 42.5 dBChannel 7: 0.0 dBmV 0.0 dBChannel 8: 0.0 dBmV 0.0 dBUpstream Channels Power Level:Channel 1: 52.5 dBmVChannel 2: 0.0 dBmVChannel 3: 0.0 dBmVChannel 4: 0.0 dBmV

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May 20, 2011

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I let him take control of the system, he ran [URL] with me 6 feet from router, and then again 30 feet.  Huge difference in speed, approximately 10x slower at 30 feet.  He initially stated the problem was with the antenna connection and offered to send a tech to replace the antenna, which requires a display replacement as well.  I was skeptical so pressed him to verify that this was a known solution since there were so many complaints.  He was absolutely certain this was the issue, but put me on hold to double check.  He came back and stated they needed to replace the wi-fi card from the Dell 1901 to Intel 2230 along with the antenna.  As a former antenna engineer, I suspect the problem is the design of the antenna and/or its location, and not the drivers or wi-fi card. 

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