Question about IBM ThinkPad T21 Notebook

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I changed the battery on my T21 now it is asking for a lock code it is about 10 years old

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  • 38 Answers

Hmm, u tried resetting all settings etc ? also try if that fails hirens boot cd

Posted on Apr 26, 2010

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2 Answers

Ibm thinkpad t21 comes on with error 0271 and then changes to what looks like a screen symol with a lock at the side of it. can you help please?


hi, ibm t40,t41,t42 etc. error 271 check date and time setting and wont cmos/bioss/pop password. solution 100%... you have change cmos battry but your problem still so dont worry. i'm solve problem. my email id-m.word96@gmail.com...

Dec 06, 2010 | IBM ThinkPad T21 Notebook

1 Answer

0271 error


go to the bios and set the time and date there. you also may need to load the default settings to reset the bios to remove any bios passwords. if that does not work remove the bios battery or move the bios jumper for one minute. to reset it write down all bios settings befor you do it.

Jun 22, 2009 | IBM ThinkPad T21 Notebook

1 Answer

Need to recover password


hi i hope this will help you, but be careful with these solutions..do this at your own risk.

here's the url:

http://sodoityourself.com/hacking-ibm-thinkpad-bios-password/

Mar 21, 2009 | IBM ThinkPad T21 Notebook

2 Answers

Code change for trilogy lock D2700


First find out if you are dealing with a D2700 or the newer enhanced version. Press any 2 buttons and *,if you get a green LED and 6 beeps it is the new version. Old version remove battery and press any button. New version remove battery, press any number for 10 seconds,release, reconnect battery, press and hold the A button within 3 seconds, 6 beeps, release A button. the lock is at default and ready to program. To program new version 12345 A1A new combo A new combo this will set a new master code, if you are only using 1 code to open the lock this should suffice.

Jan 27, 2009 | Trilogy Alarm Lock T2 TRILOGY® Digital...

2 Answers

CRC Problem


Chances are since the system CRC1'd it has a very old BIOS revision. From version 1.10 on, the CRC issue has been fixed. So, get the latest BIOS from IBM, T21 BIOS: ftp://ftp.software.ibm.com/pc/pccbbs/mobiles/spsdkz34.exe and flash the BIOS. Reboot the system and verify the updated BIOS. Now power down the system, desolder the known good EEPROM and resolder the CRC1 EEPROM. Boot the machine and hit ESC when the splash screen comes up and watch the post screen. The new BIOS should have recalculated the EEPROM checksum and written the changes to it. You'll know if it worked because the CRC1 error will be gone.

Jan 03, 2009 | IBM (09N5424) Motherboard

2 Answers

IBM T21 doesn't start


try to start it with the battery out by pluging it straight, the battery is dead and its causing problems

Mar 13, 2008 | IBM ThinkPad T21 2647 Notebook

1 Answer

Locked screen


emove the CMOS battery, POP will be vanished right away. But after that, you have to enter BIOS to set the time/date, otherwise laptop won't boot.
if that doesnt work goto
http://www.passwordmethod.com/

Jan 02, 2008 | IBM ThinkPad T21 Notebook

3 Answers

IBM T21


i have the same problem. actually its a common problem for many T21 and other old IBM laptops.
i searched that you have to take all power (batery, adaptor)
press the power 10 times and press it for 30 secs then reinsert the battery or adaptor and try to power it on.
they say its done to discharge a certain capacitor that got overcharged after overcharging the battery.
that worked for me before but now my T21 wont start any more with this process.

May 20, 2007 | IBM ThinkPad T21 Notebook

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