Question about IBM ThinkPad T40 2373 Notebook

3 Answers

T40 keeps losing video randomly

The computer starts up (sometimes) and it can get as far as the desktop, then, randomly, the screen shuts off. the computer is still on though, cause its still lit up and makes noise. ive tried an external monitor, and even that will shut off randomly. when you try to turn it off then back on again after the video has dissapeared, the monitor doesnt turn back on at all and it beeps 3 times. if you give it a few minutes however, it turns back on (sometimes). whats the problem?
could it be the video processor failed due to overheating, maybe a bus connector failure? if so how do i fix it?

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  • Gaiaoenghus Mar 28, 2008

    Same issue, It booted,got to the desktop and then th screen flashed from black to desktop to black to a distorted desktop to black. Now I boot it up and the computer is on but the screen is black and if i wait long enough I get a lit screen that is still totally blank and black. I don't even know how to get it to boot in safe mood like this.

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It's broken solder point or points on the GPU chip. It's very common with the thinkpad T40. This can only be repair permanently by replacing the motherboard or reflowing the solder on the GPU with a heat gun. There is a utube video demonstrating the reflow process.

You can confirm this is your issue by applying strong downward pressure on your laptop just above the left corner of your touchpad and turning the laptop on. If the laptop boots completely while holding this pressure, you can be sure your laptop has this issue.

Good luck!

Posted on Apr 01, 2008

I have the same problem. I am not convinced that it is a microsoft issue. Try leaving it On for a while without booting windows. eg use a linux boot disc ( it will take ages before it gets to the point where it would actually install anything and then it asks you). When I tried this mine shut off. You could also try switching off all the power save auto switch off stuff, eg when you press the power button, close the lid etc, as maybe it is a bad connection.

Posted on Mar 21, 2008

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If you can get into windows for long enough go into device manager and check drivers if any crosses reinstall/update drivers.also check system information and look for forced hardware and conflicts/sharing in resources.
other than this reinstall os.
your problem seems to be software problem and not hardware.
personally you can spend a lot of time looking for the problem when in ur case(not much of a problem)it would be a lot easier to reinstall windows cos its all auto config.
if you do choose to reinstall take a note of your drivers especially video and audio most others can use generic

Posted on Mar 05, 2008

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Posted on Jan 02, 2017

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