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I have a black screen on my Lenovo T400 laptop. It seems to be working in the background. Anyone any ideas?

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If you can see the OS in a bright light on the moniter,"It seems to be working in the background", I would thing it's the CCL or back lighting. Sometimes the small switch that shuts-down the CCL when you close the lid of the laptop gets stuck with age. I have repaired some monitor problems, the switch is located near/under the hinges. Locate the tiny switch and make sure it is moving freely, as in, up to turn-on CCL, and down to turn-off CCL. The other issue I fixed was the "ribbon-cable on the rear of the flat monitor. It get jared loose sometimes with a bump.

Posted on Oct 29, 2012

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Posted on Jan 02, 2017

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  • 2567 Answers

SOURCE: my lenovo t400 has screen flickering when ever i

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.

Posted on Apr 10, 2011

  • 11 Answers

SOURCE: i am locket out of my new t400 laptop

Try to reinstall your coumputer if it dosent work call the company

Posted on Mar 23, 2010

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

  • 561 Answers

SOURCE: when starting my Lenovo Think Pad laptop T400

Hi

Thank you for your query

Please try the following

1) Hook up a external keyoard to the USB/PS2 prot and see what happens

2) Press all the keys several times when the laptop is switched off to ensure that the keys are not stuck i.e. with debris etc etc

if this fails it would seem you have a bad keyboard, and would be looking at getting replaced

Please leave feedback/vote if my answer was helpful

Posted on Feb 12, 2010

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