Question about IBM ThinkPad T42 Notebook

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T42 PC ThinkPad won't turn on

I've tried taking out the battery and putting it back it - but nothing comes on at all. The only light is the battery light when the computer is plugged in. Any suggestions

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  • calligra Aug 24, 2008

    When I unplug the power cord, no lights at all come on and the computer doesn't respond at all. With the power cord plugged in, I get a battery light but nothing else. It was working fine 2 days ago.

  • Steve Rand
    Steve Rand May 11, 2010

    Are you unplugging the power cord also? Did it crash recently or anything odd like that?

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Try starting without the battery, Then remove the memory, and try starting with each chip one at a time in each slot. Many time this is either a bad battery or a bad memory chip. Also check the power supply with an ohm meter for the proper output. If the supply checks good, and the other two suggestions don't work, then the problem will most likely be with the power management system on the motherboard. If this is the case, then you will either need to have the exact motherboard component traced by a tech, or replace the motherboard.

Posted on Aug 24, 2008

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Ibm thinkpad T42. turn it on, blank screen: hear the hard drive spinning, feel the air coming out of slots for fan. \r\n What the heck is the "Z" light found by the other icon lights; e.g. battery, half...


Try attaching a vga monitor to the vga port and reboot. If you get a picture, the backlight is probably burned out. You can try just getting the power circuitry that fits in the lid, or replacing the entire screen with the circuit.

Jun 18, 2010 | IBM ThinkPad T42 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

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

1 Answer

IBM t42 comes on, beeps twice and goes off, connected and battery


Yes it is the fan, get a can of compressed air and clean the air vents and the CPU fan with that, also i would check into the CMOS battery as it could be dead and needs replacing.
As the laptop starts up hit F1 when you see the IBM logo and check the date and time, that will be a clear indicator IF the CMOS battery is dead because it will not be the right date and time, it should however let you into windows if you put the date and time right (it may take a couple of attempts)


Good luck

Jun 19, 2009 | IBM ThinkPad T42 Notebook

1 Answer

Sound from the laptop when docked, need to go to external speakers


Go to this link & I'm sure it could solve your problem... Trust me... :-)
http://www.laptops-drivers.com

May 19, 2009 | IBM ThinkPad T42 Notebook

1 Answer

My think pad t42 does not charge or work with electricity the battery is good and the charger but when i plug it to the power it dont charge the battery it don't work with electric pewer


if you are saying that the battery and the adapter can be use on another machine,just plug it in again on the machine and turn it on,if you can see the indicator but no display or the indicator also no light,means your system board is dead.change the system board,nothing else can you do dude.

Apr 09, 2009 | Lenovo 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

My T42 suddenly wont recharge the battery or wrk off mainsadapter


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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