Question about IBM ThinkPad T40 2373 Notebook

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IBM T40 boots up with no screen display

I turn on the laptop and you can hear it boot up, but nothing appears on the screen.

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  • 265 Answers

Hi ,
1st- How old is the notebook , 2nd - do you still have the manual for this notebook , sometimes there is a fuction button you can press to shut off the display , normally its the F1 Through F12 keys but there also might be a fuction key you have to press with the F1 button , let me know if this works , i'll be waiting .........goodluck Roy

Posted on Oct 31, 2012

6 Suggested Answers

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Posted on Jan 02, 2017

SOURCE: My Ibm t49 the display shuts off as soon i as i boot up help

  • after open my laptop ifI movejust littel it isnotdisplay it means screen have withoiut graphics
  • other laptop it is not swtch on if we cant battery short
  • please send me information about it on my e-mail
  • montdifi@yahoo.com/gmail.com

Posted on Dec 23, 2007

SOURCE: A31 won't boot

Try unplugging the AC power supply and running on battery. I'm having the same problem

Posted on May 16, 2008

  • 9 Answers

SOURCE: My IBM Thinkpad T40 2723 will not boot up

The first thing to try is to unplug the power adapter from the computer then remove the battery. Then press down the power on button for a second or two. Put the battery back in and reconnect the power adapter and see if it boots. 

Posted on Apr 10, 2009

  • 10 Answers

SOURCE: IBM ThinkPad T40 2373 PC Notebook

This is ussually caused by an unsupported WiFi card being installed. You can correct this problem by using a quick BIOS hack... (If you are getting the 1802 error)

Go to this site for the fix: http://www.command-tab.com/2006/02/26/thinkpad-1802-error-fix/

Posted on May 27, 2009

parrotheadpc
  • 2600 Answers

SOURCE: ibm thinkpad r50 notebook won't boot

Windows Start-up Errors
Step one, you need a Windows Installation CD. If you only have a recovery disk set like the ones from HP or Compaq they will not do what you need done. Under normal circumstances however, you can use a Dell disk because the Operating system is on a stand-alone disk. All retail versions are also acceptable as well as upgrade disks. For a rule of thumb, if the disk has the Microsoft hologram it should work. You can order a boot up floppy disk from here:
http://support.microsoft.com/kb/310994 with this file, if you know how, you can use “ImageBurn” to burn the file into an ISO file which can be burned to a disk. Now make sure your computer boots to the cd rom first. If you know how to do this skip on down, if you don’t, while the computer is first starting up and you see the manufacturers splash screen, tap F12 (some computers it’s F9, others it may be another key, you may have to watch and see if the computer lists the key strokes for getting to the boot menu. If you still cannot find it, boot into the BIOS settings and change your boot order there. Save your settings and exit, the computer will now seek the cd rom as its boot source first.
Place your Windows disk in the computer and start it up. When you see the test at the top of the page “Press Any Key To Boot From CD” Just hit the space bar to activate. The next screen you will see will most likely be a Windows setup screen, when you see this press the “R” key to get to the recovery console. It will get there, it may take a little time, patience. Once it loads you will be given a choice of Windows installations, there should only be one, if there are more, always pick number one. It may ask for an administrators password, if you have not set this particular password, then just leave it blank and press enter. The next prompt you see is:
C:\Windows>
You need to type the following:
cd \
hit enter. Pay close attention to the spacing between the characters. There is a space between the character “d” and the “\”
You are now at the ROOT of the drive, this is where basic commands can be given and changed. You should now see the following:
C:\>
Now type the following:
CHKDSK /R
Hit the enter key.
The chkdsk /r command also includes the P command and will also look for lost recoverable information in bad sectors.
There are occasions depending on how corrupt the system is, that this process could take several hours, so be patient with it.
Now, after chkdsk has run type the following:
FIXBOOT
Hit the enter key.
It may prompt you with a warning, that’s ok, just continue. When fixboot has finished, type: EXIT hit enter and windows will reboot. When the system reboots, tap the F8 key during this time and you will see the multi-boot menu come up. Scroll to the title “Last Know Good Configuration” and hit the enter key. If you were having some simple drive errors this should have fixed them.

Posted on Oct 15, 2009

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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


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

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IBM T40 Laptop screen goes black, will not come back


First of all, you have to check whether you can see video signal with surrounding light tilting the screen.
If you can see dim image, all you have to do is replace back-light inverter or fix it. Usually, the fuse is open and you can connect it by simple soldering.
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Dec 09, 2008 | IBM ThinkPad T40 2373 Notebook

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Yap actually i greet you first
what your system is prompting you is that your Processor is getting Bad and you will need to replace it with a new ones ok
After that your system come back to life .
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Rate this solution

Oct 20, 2008 | IBM ThinkPad T40 2373 Notebook

2 Answers

My Ibm t49 the display shuts off as soon i as i boot up help


There are several possibilities within two categories:

SOFTWARE (you are using MS, so this is more likely)
HARDWARE these symptoms can be caused by bad battery and/or bad PSU (AC Power Supply Unit)

Software: You may have a virus, or may have damaged the NT kernel, or some critical software components by installing cheap games or bad SW. Read the recovery instructions on your XP CD to boot and run recovery and/or utilities that might repair the laptop OS. If you have no CD, try booting and hitting F6 key after BIOS screen... then explore the options there. Next, try booting and hitting F8 key after BIOS screen... then explore the options there.

If there are no problems repaired or evident in software, you should remove the battery, plug in the PSU and try booting. If all goes well, your battery is probably bad. If NOTHING happens, then your PSU is definitely bad (or the PSU cable/jack/connection to your computer is bad)

Conversely, remove the PSU and boot only with the battery. If it boots up (or goes farther than it did before) then the battery may be low/damaged BECAUSE the PSU is bad. If your laptop does not even open/get at least to BIOS screen, then the battery is dead. Try recharging overnight with laptop off but plugged into AC. If it is the same in the morning, replace the battery.

Both the battery and PSU can be checked with a VTVM, to compare voltage/output levels, with the ratings on the labels

Dec 06, 2007 | IBM ThinkPad T40 2373 Notebook

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T40 Monitor Display


I assume you are running window XP or vista?
Go to
Start>Control Panel and look for Power Saver, or Screensaver options. There will be settings there for determining how long, if at all, your display will take to turn off.

Nov 15, 2007 | IBM ThinkPad T40 2373 Notebook

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