Question about IBM ThinkPad T23 2647 Notebook

1 Answer

T23 - Ready for the Graveyard?

My T23 will not boot up, with or without the cord. The lights come on momentarily and then a fan starts up. The fan stops and starts every second or so. That's all I get. Any ideas?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 121 Answers
Re: T23 - Ready for the Graveyard?

Get to the mainboard
there is a jumper near the cmos battery usually shows the
word (jbat) near it , try to change its position for some
seconds while power is off , this way will clear cmos and set the
mainboard bios to default settings.
start the system hit delete or F2 to enter setup then exit saving changes.

Posted on Nov 15, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

IBM T23 wont turn on after adding new RAM

Hi - according to memory suppliers your T23 has the following memory capacity / requirements:

  • IBM ThinkPad T23 maximum RAM capacity: 1GB
  • Your IBM has Two (2) memory slots or sockets
  • Module upgrade PIN count is: 144-PIN
  • The memory speed is: SDRAM 133MHz, PC133
  • The laptop DIMM type for the ThinkPad T23 is: SODIMM, SO-DIMM, Small Outline DIMM
  • Non ECC

If you are meeting these requirements, you may have a defective module.

Also, according to Lenovo's page on the machine:

The system has 128MB or 256MB of memory standard and can be configured for up to 1GB of addressable memory. Memory options up to 512MB SDRAM SO DIMMs each can be added in the two available slots for memory expansion. The standard 128MB of memory is expandable up to 640MB and the 256MB of memory is expandable up to 768 MB of addressable memory with 64, 128, 256, or 512MB SO DIMMs without removing the 128MB SO DIMM that is standard in one of the internal slots for memory. For customers that need the maximum 1GB to which memory can be expanded, it is necessary to replace the 128MB or 256MB card with a 512MB card plus add another 512MB card in the extra slot. Only 133MHz DIMM memory can be used in this system. The use of 100MHz DIMM memory is not supported in the T23 systems.

This means yo can trouble shoot the 512MB modules individually by installing one of the original 128MB modules and one of the new 512MB modules (for a total system memory of 640MB). If it does not boot, try again with the other 512MB module. This will help you identify a defective module that may be preventing the machine from booting.

I hope this helps & good luck!

Sep 28, 2012 | IBM ThinkPad T23 Notebook

1 Answer

In my IBM T23 Thinkpad battery is fully charged showing green light constantly but not able to switch 'ON' after pressing the power button. What should I do?

try to switch it on with power cord still plug in it, if it do boot-up, you have to replace your baterry, if not somethings wrong with your laptop

May 06, 2010 | IBM ThinkPad T23 2647 Notebook

1 Answer

Ibm thinkpad t23, will not come out of sleep mode even when manually turned off and on. Cooling fan comes on, only blank screen.. I have removed battery and let it sit for a while, and then restarted it,...

Please press F8 at boot up and boot in safe mode. Restore to a previous date given in bold numerals.
Alternatively, after F8 select Last Good Boot up.

Mar 16, 2010 | IBM ThinkPad T23 2647 Notebook

1 Answer

T23 Thinkpad turns off during boot after restart

My guess would be ;-
A power supply problem with the battery and/or power adapter
The most likely one.
The CPU is overheating and shutting down and if you wait a while and it will power it up again, it will then run for a while and shut down again.
This can be caused by a faulty fan (its not spinning and needs to be replaced) or the vents are clogged with dust (needs to be cleaned and you may need to remove the fan assembly to do this).

Jan 27, 2009 | IBM ThinkPad T23 2647 Notebook

1 Answer

T23 Dropped and will not turn on

I hate to say this, but it sounds like Lenovo Service is where you need to start at this point.

Jan 04, 2009 | IBM ThinkPad T23 2647 Notebook

1 Answer

IBM Thinkpad T23 Won't Start

do you have a hard drive install??
laptop need a hard drive to start up. the one time start up you see before is just a accident.
as far as battery not charge, that is the porblem you run into, when you get laptop from ebay (taking chance).
you also need to download all of the drivers from IBM for the laptop.

Dec 10, 2008 | IBM ThinkPad T23 2647 Notebook

2 Answers

T23 fan error

This is a commin IBM issue fans going Bad ... to try and free it if it's just dust you can actually blow into the vent with compressed air and free up the Fan ... The IBM T series all check fan before powering up.
The replacement is not too difficult to do.
The safest air is the can type to blow in there.
Good Luck

Oct 29, 2008 | IBM ThinkPad T23 2647 Notebook

1 Answer

Toshiba 5205-S503 Laptop- No power

- You may want to try to reseating all neccessary things on the system like optical drive,hdd,memory but before you do that disengage the power from the system like the ac and battery.

-If no..go try to remove the optical drive first and then turn the system on, then if the system boot without the optical drive shut it down and put back the optical drive and boot to bios and load the default setting and boot the system normally.

Oct 11, 2008 | Toshiba Satellite 5205-S503 Notebook

1 Answer

Fan turns on and off rapidly

The fan cycling problem on the T23 series usually indicates a loose solder or missing inductor which is usually on the underside beneath the PCMCIA slot. If you replaced the mobo yourself you may have flexed what is a weak solder joint loose - you will need to pull the board and resolder this or have someone else do this for you. You can sometimes get the laptop to start by flexing the assembled laptop gently around the PCMCIA slot and if so then that almost always means an inductor problem. You can find some photos by googling (images) "T23 mobo" or "T23 motherboard".

Feb 19, 2008 | IBM ThinkPad T23 2647 Notebook

3 Answers

T23 wont boot

I would unplug it and remove the battery. Plug it back in and try without battery, if it still doesn't work, unplug the power again and remove the memory (RAM). Plug it back in and try again without RAM, if it beeps then the motherboard is probably good. If you had more than one piece of RAM, try one at a time and see if you get it to boot with one of them.

Jan 11, 2008 | IBM ThinkPad T23 2647 Notebook

Not finding what you are looking for?
IBM ThinkPad T23 2647 Notebook Logo

Related Topics:

142 people viewed this question

Ask a Question

Usually answered in minutes!

Top IBM PC Laptops Experts

John mullen

Level 2 Expert

229 Answers

 Mike M
Mike M

Level 3 Expert

3320 Answers


Level 1 Expert

29 Answers

Are you an IBM PC Laptop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides