Question about IBM ThinkPad 600E 2645 Notebook

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System will not boot up.

Error 1802? unauthorized network card is plugged in power off and remove the miniPCI network card.

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  • George Brown
    George Brown May 11, 2010

    Does it boot when you remove the card? IBM does a lot of firmware labeling.

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Thinkpads have readable "FRU" (Field Replaceable Unit) numbers storedon various components, and at boot up time, for those internal devices(fortunately excluding drive, memory, etc) if they do not "respondcorrectly" saying they are a valid IBM part, they will give this 1802error.

It could be that the referenced device has failed, and thus seems to be there but not responding; it could need reseating;

The Lenovo site should be able to help you with a service guide to remove the card and see if that works.

there is also a "hack" to change the bios of machine - I think "prior to T43" to delete the 1802 check:
http://www.command-tab.com/2006/02/26/thinkpad-1802-error-fix/

Be aware any "hack" can disable the machine completely!

If it does turn out to be the mini PCI network card, you can tryremoving it and going with USB (did 600s' HAVE usb? I can't remembermine any more) or try to find a "genuine" IBM replacement on eBay orITxchange.com

Posted on Jul 17, 2009

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Posted on Jan 02, 2017

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To fix this problem you will need the latest bios update from IBM's support website or go into the BIOS by hitting F1 when you see the IBM logo. Once in the BIOS set it to defaults, save the changes and exit the BIOS, see if that helps.


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ibm thinkpad does not boot My IBM Thinkpad 600 (Type 2645-310) stops and hang during bootup. What happens is: 1. LED test, then green Power on and orange battery/charging 3. RAM OK (Responds when I take out /put in different amount of RAM and displays correctly. I have 128 + 32 removable, + 32 internal not possible to take out) 2. I can hear fan, CD drive and evt diskette drive. If I use diskette drive the LED wil give 1 blink, if I use CD drive it will give 14 blink. 3. No cursor seen, but this is displayed: Upper left show the amount of RAM present: 196032 KB OK Upper right IBMs logo in blue; IBM Lower left shows "ThinkPad(R)" in large letters and red dot over "i". 4. Then a "rrrrrr" sound from the loudspeakers after a while, this is in fact 28 clicks shortly after each other. Then nothing more happens. Diskette and CD drive is OK (But can not be used because bootup is never finished). I hear CD speed up and then down again but nothing more happens. No effect in booting with bootable diskette or CD, "Live Linux" CD or else. Backup battery OK (3V) and if I take it out I will be asked for correct date and time when Power on. I can then use keyboard or TrackPoint to set date and time, and after that hangup at the usual point. Starting without battery, HDD, CD drive and removable memory sticks makes no difference in symptoms. Pressing and holding F1 before and during poweron and startup (in order to enter BIOS and selftest) has no effect. I could not find help on IBMs home page, but maybe I did not look at the right place. Is somebody able to help me?

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