Question about IBM ThinkPad T42 Notebook

4 Answers

IBM T42 does not start

My IBM T42 thinkpad would not start all of a sudden. The battery and AC power supply seem to be working fine. But everytime I start the laptop, there is a blank screen..the hard drive icon also does not blink.
However, if I persist and try starting it a a few dozen times, some time windows boots up and after a while everything freezes.

I was able to transfer all the data from hard drive through a SATA/USB interface. So, the hard drive is also good. The CD tray also works...so the laptop is getting power.

I suspect the problem is either to do with heat or some internal electrical connection. Would appreciate if someone could point me to some info on things I could try. Maybe a website that explains step-by-step or some general suggestions.

The laptop was working fine till 3 days back.

Thanks

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  • 3 more comments 
  • vivek_136 Dec 01, 2007

    Thanks Ron. I just followed your instructions (very clear) verbatim. The laptop turns on now.

    I moved the RAM under the keyboard to the back and vice versa. Also cleaned up the dust with an air compressor.

    It seems to be working fine now and does not freeze too.

    In carrying out some of the steps, the following instructions may come in handy.
    http://www-307.ibm.com/pc/support/site.w...



    Hope that there are no further problems.

    Thanks again Ron...I really appreciate your help. Outstanding diagnosis!!

  • Farraway Oct 22, 2008

    Hi. My T42 IBM often freezes, sometimes with corruption on the screen, and it won't boot again until I press on the right side near the track pad (haven't tried the left side). If I move it around when it is on, it will freeze. I have had the ram out (only one under the keyboard). This problem was sudden, and seems to be getting worse. Thanks in advance.

    Craig


  • Snake_vqs Oct 29, 2008

    I HAVE A IBM T42
    IT WONT STARTS STAYS ON A BLACK SCREEN AND OLY TE "z" OR "n" LIGHT ITS ON. tHE fAN AND ITS WORKING BUT THE ONLY THING THAT THE PC DOES ITS TUR ON THAT LIGHT



  • CowboyOne Dec 13, 2008

    I have the same problem and the the fix of 'exerting' pressure (fairly intense) on the bottom left of the machine allows it to work.. what is really happening when I do this.. Is Ron still out there?

    C

  • Anonymous May 13, 2009

    my ibm laptop freezes or doesnt start at all and when it does start after 20-30 mins it freezes and start to shake from the inside if you touch it help please..... ill be glad

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Secondly, I need you to try to power it on while you press down firmly (really press down) in the area just towards the front of the space bar and just to the left of the touch pad assembly. Hold it down while it tries to go through the entire power up sequence.


happy! second worked... this actualy work for me it boot it windows normaly, it went to the logging proces as normal, it seems that some cable for the lcd has been lose i dont know can you explain Ron what causes this

Posted on Nov 11, 2009

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And, a good day to you!
To start with, I have a couple of things for you to do so that we can get a little better handle on just what's happening.

First, let's remove the battery, all of the memory (both under the keyboard and on the bottom) and the hard drive. Then replace one of the memory modules in the slot under the keyboard, and see if it doesn't try to come up. Whether or not it tries to come up, go ahead and replace the hard drive and the other memory module and try to bring it up again.

While you have the keyboard out, check the area around the fan to see if it is crudded up with dirt and dust. If so, carefully clean that area.

This exercise may be all that is needed to get it fixed. If not, then continue on.

Secondly, I need you to try to power it on while you press down firmly (really press down) in the area just towards the front of the space bar and just to the left of the touch pad assembly. Hold it down while it tries to go through the entire power up sequence.

Then let me know what happened.

Ron-

Posted on Nov 30, 2007

  • Ron Roske Dec 01, 2007

    You are entirely welcome! Always glad to help and am pleased to see you up and running. ;o)

    I appreciate that link that you sent. Ran across it once and, of course, when I have tried to find it again I couldn't. Thanks to you, it is now bookmarked.

    Ron-




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So if "solution" #2 worked, what is really the problem? GPU badly soldered to m/b. If so can it be fixed (without replacing m/b)?

Posted on Jan 19, 2010

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My IBM ThinkPad T42 does not start. No picture, no sound. The battery indicator flickers yellow but no other indicators light up. Took out the battery and tried connecting directly to the mains. Still, the system does not start.
Can someone diagnose and suggest a fix. Thanks/Kumar

Posted on Jul 22, 2009

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Posted on Jan 02, 2017

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SOURCE: Any touch will freeze my laptop IBM Thinkpad T42

There is a common problem with this machine; the mother board flexes and the processor mount partly separates from the motherboad. You tube posts a couple of solutions but they involve taking the laptop apart and applying heat from a heat gun to resolder the mount; it is not a solution for the faint hearted. Thinkpad/Lenovo might consider reparing the unit as it is basically a desgn/production defect but don't hold your breath.

Posted on May 29, 2008

  • 37 Answers

SOURCE: My IBM T42 thinkpad would not start all of a sudden

Whops that sounds like a Mother Board Issue Common to IBMs.

What happens when you try to reload the O.S ? I would imagine it still shuts down. If over heats the computer will still turn on but not stay on, will shut down when the sensor on the CPU detectes excessive heat > 75 degrees F .

The problem is somewhere in the Power Supply flip flop Circuit System on the Motherboard most likely but thats academic!

You really cannot "repair" them, only replace them and usually that does not pay; the board costing more than the Computer is worth and Installing it is really a "Factory" Operation.

TIgar has a good selection of Levono Factor Rebuilt Notebooks (hint) lol :)

Posted on Aug 20, 2009

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I have IBM thinkpad when i want to open the laptop sometime its open but sometime it could not help me to solve this problem


Hi,


Im very sorry to hear that, please follow these simple steps for you to be able to isolate the exact problem.


1. Removed the battery.
2. Connect the laptop directly to the power outlet without using the battery just for the meantime.
3. Turn on the laptop. If the laptop is able to power on, that means that the AC adapter is working fine as well as the DC port. If the laptop is not able to turn on, it maybe the AC adapter itself or the DC port.
4. Try to use another AC adapter if possible, make sure that that AC adapter is working fine. If the laptop is still not turning on, the problem is with the DC port itself. In that case, you will need to replaced the Motherboard itself.


Hope this will help...Thank you for using Fixya...

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Try these steps:

1. Remove battery and unplug AC adapter
2. Press power on button for 30 seconds or so (one min is also too)
3. Attach battery and plug into wall
4. Power "ON" as normal

If you are still getting the "Z" and a black screen then I would have the video card or hard drive looked at and replaced. Start with the video card and then look at the hard drive


thinkpad-t42-wont-boot.html">http://www.techsupportforum.com/hardware-support/laptop-support/234433-ibm-thinkpad-t42-wont-boot.html

Feb 17, 2010 | IBM ThinkPad T40 2373 Notebook

1 Answer

My previously healthy Thinkpad T42, will not post.


Hi,
The Thinkpad T42 doesn't have a reset button on it like the older IBM's used to.

There could be a problem with the battery. With the machine turned off remove AC power and then the battery. Plug in AC power again and see if the laptop will boot without the battery.
If it boots let it load up as normal and then shut it down again, reinsert the battery and try to boot it up. If it boots fine, if not then there is a problem with the battery.

Please post back if you need anymore advice.


Good luck.

Jan 14, 2010 | IBM ThinkPad T42 Notebook

1 Answer

My IBM T42 thinkpad would not start all of a sudden. The battery and AC power supply seem to be working fine. But everytime I start the laptop, there is a blank screen..the hard drive icon also does not...


Whops that sounds like a Mother Board Issue Common to IBMs.

What happens when you try to reload the O.S ? I would imagine it still shuts down. If over heats the computer will still turn on but not stay on, will shut down when the sensor on the CPU detectes excessive heat > 75 degrees F .

The problem is somewhere in the Power Supply flip flop Circuit System on the Motherboard most likely but thats academic!

You really cannot "repair" them, only replace them and usually that does not pay; the board costing more than the Computer is worth and Installing it is really a "Factory" Operation.

TIgar has a good selection of Levono Factor Rebuilt Notebooks (hint) lol :)

Aug 20, 2009 | IBM ThinkPad T42 Notebook

1 Answer

IBM thinkpad t42 boot up problem.


The most common reason is memory.

First, try to reseat (remove and reinsert).

If still a problem, test one module at a time.

Hope this helps.

Aug 17, 2009 | IBM ThinkPad T42 Notebook

2 Answers

Thinkpad T42 Hard Disk problem


Hello.

It seems the hard disk size will max out at 80GB with a 5,400 RPM speed according to IBM.

Im sorry to say that this means that it will not support a 120Gb hard drive.

Regards...
/Tech5508

Feb 14, 2009 | IBM ThinkPad T42 Notebook

1 Answer

T42 is not starting


Try doing a manual system reset. To do this:
1. Remove battery and unplug AC adapter.
2. Press and HOLD power ON button for 30secs. at least
3. Put back the battery and plug back the AC adapter
4. Power ON the laptop as normal.

Jan 17, 2009 | IBM ThinkPad T42p Notebook

1 Answer

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If the Laptop wont work off the power adepter, it also will not charge. The adepter could be bad (even if showing a power light) or the connector on the laptop could be broken. The best test is to take the battery out, attach the power adepter and try to start the computer if it starts, your battery is at fault. If nothing, suspect eh charger first. Be sure the pin on the Laptop power connector isn't bent or broken.

Jan 04, 2009 | IBM ThinkPad T42 Notebook

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