Screen goes black when plugged in - Video - Laptop - Dell Community

Screen goes black when plugged in


Laptop computer Forums (Audio, General Hardware, Video)

Screen goes black when plugged in

This question is not answered


Help would be hugely appreciated.

I have an Inspiron 6400 laptop - it's only about 18 months and frustratingly out of warranty.

When I am running off the battery the screen works fine, however when I am plugged in the screen will suddenly go black within a minute or so.  If I bring a strong lamp right up next to it I can just make out the screen and see the cursor, but only just.

I have tried:

- the Fn Up Down arrow keys - No Good

- checked on BIOS - Video settings which seemed to solve other users' problems - No Good

- new power adaptor - No Good

My battery's power now seems to be not as strong as it used to be so it's seems like it's a frantic race against time : )  Although, if fixed, I don't care if I can't use the battery much as I'm happy to work off the mains all the time.

I'd be VERY grateful for any ideas!!!



All Replies
  • This is usually caused by a faulty system board.

  • Thanks.

    That sounds expensive!  If I take it into a computer repair shop locally is it something which can be fixed, or do you have to replace it?

    Thanks for the help.


  • If it's a power jack problem, it can probably be repaired - you will need a specialist in soldering circuit boards.  Figure on $150-200 to have the job done right.

    If it's a circuit problem, the board will need to be replaced - any shop can do that;  the board will run about $350-400, plus labor to have it installed.


  • OK - it's very frustrating - it's a huge cost compared to the cost of buying the laptop and it's less than 2 years old.

    I'll take it to a shop and see what they find.

    Many thanks for your guidance!