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faulty wireless card?


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#1 1ce

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Posted 18 October 2011 - 09:27 AM

I have a problem with the wifi card in my laptop at home. sometimes when it starts up it will not pick up the wifi card at all as in not even anything in device manager. at times it will and then after a few hours it will go missing from dev manager. I have replaced driver, reseated, and also rebuilt windows 7 to see if that would solve it... but its still the same, I was starting to think it was faulty hardware?

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#2 MrBruce1959

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Posted 18 October 2011 - 04:01 PM

Hello and welcome to Bleeping Computer.

If you could please supply us with the make and model number of your laptop, this will help us to help you better.

Also is this wireless NIC a built in adapter or is this an external adapter?

If it is external, please supply us with the make and model number of it.

Thanks in advance.

Bruce.

Edited by MrBruce1959, 18 October 2011 - 04:01 PM.

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#3 1ce

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Posted 19 October 2011 - 02:36 AM

hi, its a dell latitude e6400 and its an internal wireless card id need to wait till i get home to find out the model no of it

#4 MrBruce1959

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Posted 19 October 2011 - 06:47 PM

Okay post that information and send me a PM to this topic, I'll reply back.

Bruce.
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#5 MrBruce1959

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Posted 22 October 2011 - 09:49 PM

I have been doing some research in the meantime.

Dell Latitude E6400 owners manuals
http://support.dell.com/support/topics/global.aspx/support/my_systems_info/manuals?c=us&cs=19&l=en&s=dhs&~ck=anavml

http://support.dell.com/support/edocs/systems/late6400/en/index.htm

Resolving No Connection Issues on Your Wi-Fi Network
http://support.dell.com/support/topics/global.aspx/support/kcs/document?c=us&cs=19&docid=420860&l=en&s=dhs

List of Dell drivers for Latitude E6400

http://support.dell.com/support/downloads/driverslist.aspx?c=us&cs=19&l=en&s=dhs&ServiceTag=&SystemID=LAT_E6400&os=WLH&osl=en&catid=&impid=

Try to stick with any recently dated drivers from that list, yes, I relaize there are several of them listed for wireless. Try to choose them by the newest release date.

The rule of thumb is to uninstall the present driver through device manager, then click update driver, then point it to the location of the wi-fi file you downloaded.

Bruce.

Best of luck.
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#6 1ce

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Posted 09 December 2011 - 05:38 PM

i have now put a different wireless card in the laptop reinstalled windows 7 64bit and is still gibing me this issue? im starting to think that this could be somthing to do with the controller?

#7 ReviverSoft

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Posted 12 December 2011 - 10:01 AM

Try disabling and re-enabling the wireless card through the Device Manager.

If that in addition to the driver reinstall fail to work, you could consider a USB Wireless Network Adapter instead.

Edited by ReviverSoft, 12 December 2011 - 10:01 AM.

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#8 1ce

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Posted 02 January 2012 - 02:36 PM

I have tried this mate, I have reinstalled windows many times x86 and x64 and i have chaged the actual wireless card also but to no avail.

I find that the card is not showing in device manager ie no card showing at all ONLY after switching on the laptop from it being switched off, but seems to be ok everytime after restarting. Also when left for a while and the laptop goes into sleep mode then resumes the card is NOT showing from that also...its very strange

I'd rather fix the problem rather than just use a dongle as its quite an expensive laptop, any input into this is appreciated

#9 LucheLibre

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Posted 02 January 2012 - 03:37 PM

When did this problem start? Can you think of anything that happened or changed right before the problem started?

If it looks like I know what I'm doing, there's a pretty good chance the only reason for that is because
I once asked someone to run chkdsk /r and a BC Advisor smacked me in the back of the head.

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#10 1ce

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Posted 07 January 2012 - 02:50 PM

this has been happening since the summer, but as i said i have re-installed windows both x64 and x86 many times plus replaced wirless card and the same prob is still happening, i have also updated the bios, i just dont know anything i else i could try

#11 1ce

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Posted 14 January 2012 - 05:28 PM

no-one can help at all with narrowing this problem down?

#12 MrBruce1959

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Posted 14 January 2012 - 06:33 PM

Sorry for my absense, been busy the last few months, see my signature below.

If your wireles adapter is a USB device and it does not reactivate from sleep mode, you should go into device manager and under USB properties (Universial Serial Bus controllers) RIGHT CLICK, right click and choose properties check to see if allow windows to power off this device to save power is enabled. If it is, uncheck that option and windows will no longer power off that USB device.

Hope this helps.

Bruce.
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#13 1ce

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Posted 16 January 2012 - 09:09 AM

thats no problem mate, the device is NOT usb but an internal card, i have tried 2 seperate cards, and its not as if it goes off after a while of being on, it happens after switching on right from the startup, then i have to restart for it to pick the card up




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