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Flickering lines every 2 seconds through lenovo T400 screen

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Your video card and/or drivers are probably bad - this is not good if you don't have a warranty or service contract for the laptop. It's possible it could be heat related - I would make sure the unit is cleaned and dusted off and provide for ventilation to dissipate heat buildup. Heat is a system killer, especially video cards.

Posted on Oct 15, 2013

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Posted on Jan 02, 2017

Joed911
  • 4338 Answers

SOURCE: Lenovo T400 web camera

Great!
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe

Posted on May 15, 2009

SOURCE: How to Enable integrated camera in lenovo T400

  • start,
  • control panel,
  • system,
  • hardware tab,
  • devices and right click on web cam and chose enable.
hope this helps.

Posted on Aug 15, 2009

  • 1 Answer

SOURCE: my lenovo T400 will not start up

I got the same problem. Have u resolved the it? If so, please send a message to: tjsteen@broadpark.no

Posted on Oct 22, 2010

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1 Answer

Horizental lines across lcd screen for lenovo t400


It's a bad LCD. Replace it. Horizontal or Vertical lines are indications of LCD issue and can only be resolved by replacing the screen itself. Same with dead pixels. Sorry!

Nov 28, 2013 | Lenovo ThinkPad Computers & Internet

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Horizontal flickering lines in the bottom of the screen


I am looking for a solution. My laptop blinks this same way. I updated the system

Oct 16, 2011 | Lenovo ThinkPad T400 PC Notebook

1 Answer

When i start Lenovo thinkpad T400, i get to see a lock symbol with blank screen


Hi sundar1968,


I see that your Thinkpad T400 machine is locked and you are unable to make use of the machine.

to be able to unlock the machine power the system on once turned ON you will see a Lock icon on the center of the screen just press and hold down the FN key for at least 5-7 seconds or if possible untill the lock icons shows that it is unlocked.

This should help you with your concern.

Have a nice day,

mvincentc

May 11, 2011 | IBM Lenovo ThinkPad T400 7417 Notebook

1 Answer

My lenovo t400 has screen flickering when ever i on the laptop flickers continously booting stops left side some part of screen goes light blue


Sounds like a problem with the video adapter chip. The chip might be either defective or experiencing bad connection with the motherboard. In order to fix this problem, you will need to disassemble the notebook, pull out the motherboard & inspect the video chip & its connection points to the motherboard. If the video chip is defective, you might have to replace the motherboard.

Apr 10, 2011 | IBM Lenovo ThinkPad T400 7417 Notebook

1 Answer

Lenovo t400 cannot boot. have "z" light only


Hi vincent,

I see that you have a "z" light indicator on the system when powered ON but you see no video on the screen.

The "z" Indicator means that the system is turned ON and ready to use but is in standby mode.

To disable standby mode on your system simply press the FN button for about 5 seconds on the system make sure that the machine is turned ON, this will make you system go back to normal mode.

Note:
For additional info on the issue the system can be put to standby mode by holding down the FN+F4 for a second or two this will enable standby mode on your Thinpad T400 and to disable the standbymode press and hold down FN for 5 seconds.


I hope that this will be of help regarding you concern, have a nice day.







Mar 30, 2011 | IBM Lenovo ThinkPad T400 7417 Notebook

1 Answer

Is there a "shortcut" for dimming the screen


The keyboard has function keys just like the Dell. Hold down the FN key and tap the key that has a little sun + or - on it.

Mar 29, 2009 | Lenovo ThinkPad T400 - Intel Centrino 2...

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