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Question about IBM ThinkPad T42 Notebook

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IBM T 42 - Not starting

I am not able to start the laptop. When I switch it on, the lights come on and in a second two lights - battery indicator and the one next to it - stay on...others go off. The laptop does not get booted. Nothing comes on screen. Have checked the Power Cable, battery. both are fine. What should I do? To me it appears it fails after doing keyboard test...

Posted by Rajashekhar... on

  • tpitter Feb 03, 2008

    Hello, I have the same problem with R50e. Did you find any solution Please?

  • henrik-fixya Sep 14, 2008

    Same problem here with an R50e. I asked my boss if I could take it home. He said yes and I took it home. To my surprise the machine booted and worked for almost two days (with several reboots due to windows updates, benchmark tests, and burn in tests that stress the CPU and memory.) Now the Problem is back.
    I guess It has to do with large SMD components on the motherboard that become lose when the motherboard flexes. A known problem

    The only thing that starts up are the LEDs and the CPU fan.
    I think they are (left to right)

        When pressing the power button all LEDs light up. (except for the wlan indicator which is a bit separate)

        After about a second BATTERY and SLEEP will go dark.

        After a little more than a second BATTERY comes back. (If I pull the
        battery and only work with the AC adaptor the BATTERY LED will stay
        dark after the initial stage)

        Half a second later NUM and CAPS go out.

        HDD POWER and BATTERY (if a battery is presend) will stay lit.

    You can hear the fan spin up quite a bit so I guess the CPU is running at full speed.

    The ThinkLight does not work. Usually It does as soon as the BIOS is done with the POST (power on self test).


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  • 114 Answers

If the laptop is not even getting to boot the hard drive, then their may be a problem some where on the motherboard and it may need to be replaced. Before replacing the motherboard, there are a few things you can try. 1) If you have extra memory, try swapping in new memory and see if the laptop boots then. 2) Try disconnecting all peripherals and add-ons and see if the laptop boots then.

Posted on Oct 16, 2006

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