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bubbalogsdon
Posts: 1
Registered: ‎11-25-2011
Location: usa
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IBM Thinkpad T40 Error 1802 help

I just bought a ibm thinkpad t40,&now after a moth/two,it says"unauthorised mini pci network card in network slot.power off and remove wireless card".

 

there is no network card in it, a bug might have crawled in it or sump'n.

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Mornsgrans
Posts: 2,420
Registered: ‎03-19-2009
Location: Idar-Oberstein, Germany
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Betreff: IBM Thinkpad T40 Error 1802 help

[ Edited ]

Hello,

did you take a look into the notebook under the palmrest?

 

The Error 1802 only appears, if a non-FRU resp. not whitelisted mPCI card is built in. Maybe the wireless card had been disabled in BIOS but still is present.

Thea reason, why this message appears now after a longer time, may be drained BIOS battery which nearly is empty now. The next boot error - message might be "set date and time" in a couple of days or weeks.

So the BIOS-battery seems to be needed replaced.

 

To get rid of the 1802-error, see (look for "no-1802"):

http://www.thinkwiki.org/wiki/Problem_with_unauthorized_MiniPCI_network_card

http://mailman.linux-thinkpad.org/pipermail/linux-thinkpad/2004-June/018253.html

 

Instruction to remove keyboard and palmrest:

http://support.lenovo.com/en_US/guides-and-manuals/detail.page?LegacyDocID=MIGR-46464

 

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My home-forum: http://www.thinkpad-forum.de
Wiki: Deutsches ThinkPad-Wiki English ThinkWiki
My ThinkPad-Collection
Bit Torrent
TuuS
Posts: 1,803
Registered: ‎01-02-2011
Location: US
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Betreff: IBM Thinkpad T40 Error 1802 help

It's also possible if you updated your computers bios, it may have had a 3rd party modified bios that does allow non-lenovo cards, but if you were to install a lenovo bios, then the error would suddenly appear.

 

It is very common for resellers to use modified bios, or install programs like "no-1802" in order to use non-lenovo parts. This really isn't a bad thing, on an older unit, if you wanted to upgrade to a new (faster) network card, even an official lenovo part would be rejected because it wasn't listed as an approved card when that machine was made, so the most common way to fix this is a modified bios.

 

Be careful if you plan to install a bios yourself, even an official lenovo bios. If the wrong bios is installed, or the computer crashes during install, or fails in any way, it could render the computer useless and only a systemboard replacement or repair could fix it, and on an older system, this would probably cost more then it would cost to replace the system.

 

 

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Mornsgrans
Posts: 2,420
Registered: ‎03-19-2009
Location: Idar-Oberstein, Germany
0

Betreff: IBM Thinkpad T40 Error 1802 help

[ Edited ]

@Tuus:

This T40-42 BIOS had not been modified, if no-1802 was used. no-1802 only sets a flag in the cmos. A BIOS updatede should make no problems.

But the wireless card must be detached before BIOS update. After the BIOS update and BIOS initialisation no-1802 will be executed before re-attaching the wireless Lan-card. 

 

But in this case only the wireless nic must be detached, then replace of the BIOS battery before executing no-1802 and attaching the Wireless nic.

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My home-forum: http://www.thinkpad-forum.de
Wiki: Deutsches ThinkPad-Wiki English ThinkWiki
My ThinkPad-Collection