Question about Battery Technology IBM ThinkPad T40, R50

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IBM think pad t40...the screen stays black. Shows

IBM think pad t40...the screen stays black. Shows that it has power but get nothing from it. I took the battery out and plug it in, this did not work. Any ideas on what else it could be???

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Are the activity lights blinking like the computer is doing something? If so the monitor may be disconnected from the unit or damaged. If so this is a pc repair issue, and a little tricky to do on your own.

Posted on Jul 03, 2009

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1 Answer

After changing out fan IBM think pad t40 screen goes black after windows xp screen finishes losding up


Wait Black Screen? AFTER you changed the fan... hmmm... I think I know what the problem is. Okay solution one; You might of hit a wire or cord in the computer when you changed out the fan. Two: You might have the virus 223, get it fixed and it should be going again! Hoped this helped! :D

Mar 25, 2013 | IBM ThinkPad T40 2373 Notebook

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My IBM T40 boots to a black screen with the "z"(light at top to right of power.


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

I have an IBM think pad T40 that does absolutely nothing when I try to turn it on. It's actually my daughters, she sid it was working just fine then she shut it down and when she came back an hour later it...


Try taking the batter out and booting using just the power cord and Vice Versus'. Also when the power is plugged in does the charging light (Battery Indicator) blink or light up? If you know the Power Supply is good, then the Mother Board may have fried. If it's under warranty, take the Hard Drive out and send it in.

Dec 20, 2009 | IBM ThinkPad T40 2373 Notebook

1 Answer

Same problem think pad will not boot ,


check and make sure that the backlight on the screen is hasn't burned out. Do you see the POST/Setup screen at first? If not then that MAY be your problem.

Jul 29, 2009 | IBM ThinkPad T40 2373 Notebook

2 Answers

IBM thinkpad turns on but screen stays black!!!!!


i had a t40 with similar issues. something with the video on board chip. can you boot to external monitor?

Jul 10, 2009 | IBM Computers & Internet

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Power connector of T40 think pad loosen


if you think your adapter really works fine then you have a  motherboard issue.

May 28, 2009 | IBM ThinkPad T40 2373 Notebook

1 Answer

T40 starts bootup, beeps five times and stops.


Probably memory. Check you manual for the POST codes.

Dec 16, 2008 | IBM ThinkPad T40 2373 Notebook

5 Answers

IBM Thinkpad t40 black screen


Chips DO get loose and what you're experiencing is a common problem with IBM T40's. The solder that holds the graphics processor to the motherboard is cracked and no longre consistantly makes a good connection. This problem can only permanently be resolved with a new motherboard, or reflowing the solder of the GPU chip on the old one with a heat gun. Do a search for "thinkpad solder reflow" in any search engine.

Good luck.

Mar 28, 2008 | IBM ThinkPad T40 2373 Notebook

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