Question about IBM ThinkPad T42 Notebook

1 Answer

LCD screen goes blank and computer stops functioning

The LCD display goes black at various times....sometimes at start up and sometimes after being on for a while. Sometimes if you tap the lid to the laptop it goes out. The power is on but nothing will work. Any suggestions?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 2,961 Answers
Re: LCD screen goes blank and computer stops functioning

This must be a loose connection on the lcd behind the lid or in the hinge, I would not atempt a repair, laptops are a nightmare, take to a specialist repairer.

Posted on Nov 30, 2006

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Why a black screen on xps l701x w7 i7 1.73

Black screen - no flashing white cursor in the upper left corner - no picture at all, i.e. the initial Dell start-up screen doesn't show up either:
- LCD is dead or isn't getting a signal - not an easy fix; or
- the LCD isn't being sent a signal - holding down the function [Fn] key and press display Function key to toggle through its settings (LCD panel only, Rear VGA output only, both LCD and VGA output)

Black screen - flashing white cursor in the upper left corner - the screen goes black after the windows loading screens come up but before the windows login screen comes up - it is probably a windows video driver problem. Try starting in Windows Safe Mode with VGA. Press [F8] after the Dell startup screen disappears to access the windows startup menu

Oct 19, 2014 | Dell XPS PC Laptops

1 Answer

Hp pavilionn dv6700 screen goes black after a while

If you shine a flashlight on your black screen and look real hard for the icons on the desktop. If you can faintly see them that means your LCD Inverter is bad. You'll have to disassemble the LCD Screen to get to it. In the mean time you can attach another monitor (LCD Flat Screen or the Old style fat CRT) with a VGA cable to the vga port on you laptop. Once you have it connected hit the FN (Function Key) + (F1 thru F12) key that that corresponds to the external display. Hold the FN Key while you hit the Function Key that is for the external display. The key might have the words LCD/CRT on it or it might show a display symbol. That's the key you want to hit while holding down the FN key. This will cause the desktop to display on the external monitor and verify that there is no problem with your Video Card inside the laptop.

Mar 15, 2012 | PC Laptops

1 Answer

Toshiba satellite a135 monitor goes black

You could have a defective screen - a defective inverter or a CCFL lamp.
To determine if you have a LCD screen or video card problem, read this and follow the instructions.

Defective CCFL backlight, it may have the following symptom:

  • Screen flashs on red/pink and off.
  • Picture stays on in red and slowly be come normal.
  • Picture flickering with dim display.
  • Picture flickering on and off.
All these symptoms indicate that the LCD backlight lamp (CCFL Lamp) has reached the end of the life and all you need to do is replacing the CCFL lamp

Connect an external monitor to your laptop and power it up, if you see the normal Windows images then the video card and laptop is OK and the problem is definitely the backlight.

Dim image and/or dark display on the laptop's LCD screen indicates a faulty LCD backlight and it could be the inverter that supplies high voltage to the CCFL lamp or it is the CCLF lamp is nearly burnt out or burnt out, most likely this is the case.
The inverter can be replaced easily but the CCLF lamp is more time consuming and requires soldering skills.
Check out for parts, repair service and DIY info.

May 03, 2009 | Toshiba Satellite A135-S2386 Notebook

1 Answer

My computer turns on sometimes the quickly goes blank. Other times, the On light comes on but the screen stays black and nothing seems to be moving inside.

try to desconnect or unplug your hard drive, if you see a black screen with a bunch of white letters, you hard drive is crashed, if not try to conect a second monitor (external) tru you vga connector, if work fine you have a lcd problem===>>>reemplace asap.

Dec 02, 2008 | Compaq Presario 700 470024-192 Notebook

1 Answer

Trouble starting up laptop

Most portable computers have a monitor loop-through or simultaneous viewing function. Press the FN +F4 function keys on the portable computer to switch the image from the portable screen to the projection screen or to toggle through the following three options:

  1. Liquid Crystal Display (LCD): Output displays only on the portable screen.
  2. Cathode Ray Tube (CRT): Output displays only on the projection screen.
  3. CRT/LCD: Output displays on the portable screen and the projection screen.

Oct 26, 2008 | PC Laptops

1 Answer

Hardware problem

Your memory is broken it's need to be replaced!

Jun 24, 2008 | Compaq Presario Notebook

3 Answers

Freezing then blank screen

Have you tried pressing F8 on boot-up and log into safe mode under administrator, no password, and right click on any empty space on the desktop, left click on properties, left click on settings, select a lower resolution,( e.g. 1024X768 ) select apply, select ok, reboot, log in as normal

Mar 26, 2008 | HP Pavilion dv2000t 14.1" Notebook Laptop...

1 Answer

Presario v2000 display problems

there is someting loose inside the computer so you may have to open it and check for loose conections or pices that they may be loose or video conectors

Jan 05, 2008 | HP Compaq Presario V2000 Notebook

Not finding what you are looking for?
IBM ThinkPad T42 Notebook Logo

311 people viewed this question

Ask a Question

Usually answered in minutes!

Top IBM PC Laptops Experts

John mullen

Level 2 Expert

229 Answers

 Mike M
Mike M

Level 3 Expert

3320 Answers


Level 1 Expert

29 Answers

Are you an IBM PC Laptop Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides