LCD Failures

Hardware failure – LCD, inverter, cable or backlight


  • The laptop appears to start as usual but the screen is black, if you move it, it turns on and works properly. Failed cable.
  • The laptop appears to start as usual but the screen is very dark, although it changes colour a little and you can see a very feint image. Failed inverter or cable 90%/10%.
  • Immediately after starting the screen has dark pink/red tint and turns dark after a few seconds. Failed backlight.
  • The screen flickers a few times but then turns dark, if you move it or tap it lightly on the sides, it flickers again. Failed cable or LCD 50%/50%.
  • Screen is either black or white (no picture) and external monitor works. Failed cable or LCD 30%/70%.
  • There are stripes on the screen (either vertical or horizontal) that change when you move the screen or tap it lightly on the sides. Failed cable or LCD 10%/90%.

In all above cases, if you plug in an external monitor, everything shows fine on it (you have to plug it in before starting the laptop and may need to press the “Fn” key together with one of the “F1” – “F10” keys to make the laptop recognize the external monitor).


If the screen is black, look for the “lid closed” switch and try pushing it a few times. It’s usually a small switch near the hinges that is pressed when the lid(the screen) is closed. Sometimes these switches get stuck in the “lid closed” position that results in black screen(no backlight) or non-starting laptop. Also some laptops have a magnetic switch (newer Dells, most Macs, etc.) that doesn’t get stuck.

The most common failures are (in this order): inverter, “lid closed” switch, cable, LCD, backlight.

250 thoughts on “LCD Failures”

  1. Hi,
    I have Acer E1-341 model but when it starts display showing horizental lines and later on white colour. Please help me to find out the problem.

  2. Hi, My Toshiba shows vertical stripes and then fails. i connected it to an external monitor it still the same.
    Please what do i do?

  3. hi my laptop is working for many years but know as I will to format it can not accept any operating system and then the monitor is death the laptop is toshiba

  4. I have a problem about my leonovo IdeaPad 100. It’s new, I just bought in November, 2nd or 3rd week. At first, it works fine not until this December. Some applications installed in my laptop starts to lag, later on, it begane to switch by itself and worst the white screen. Could help me, please?

  5. My laptop goes purple pixelled when the screen is pivoted around. I can see everything still but its like the wire is caught on the left hand side of the screen! I took my laptop apart a few months ago to replace the broken arms as one had snapped. When I did this I managed to stop the purple screen for a good few months but now it seems to have slipped back. I have one silver cover on the bottom of the screen as the other one broke, not a bother. But if I squeeze it the screen either gets worse or better so I know its a wire. What do I do?

  6. My hp pavilion m6 laptop displays only permanent horizontal coloured lines as soon as its turned starts with a bright white screen then the permanent horizontal coloured lines appear.any help please?

  7. I have Toshiba P505D-S8930. I have a problem with my screen that nobody can help.
    Last year I had repair the motherboard and after repaired I was told that there is no operating system on the machine. Previously my laptop was in different repair station and couldn’t be repair.
    Anyway I installed Windows 7 Ultimate and I have had the following problem- after 5-15-300 minutes of use I got blue or grey screen, nothing on it. In order to work I had to reboot my PC.
    Later I made an upgrade to Windows Pro. Besides having some problems with Window 10 I had/have same problem, after different time of using I have grey screen. I thought that my HD is defective and got brand new fast HD and performed clean install of Windows 10 Pro. Windows works with no problems but I have same problem-grey screen after some different time of using my PC (after 30, 180, 300 minutes). I got new external screen and connected with my PC and when I got grey/dark screen my external screen got light blue screen in same time. Anyone has clue what could cause the grey screen? Everything is fine again after reboot sometimes for longer time. Please help.

  8. I have HP pavilion g6 laptop.I m work on laptop after 30 min display is white…I connect external display ..the external display is work…what the problem

  9. Hi,

    I have a touchscreen laptop, Toshiba Satellite. I sort of dropped it by accident and now there is a vertical line that appears on my screen which goes away when I move the screen. I know that a wire may have moved. I wanted to open the screen and fix it but I am told that if I did that then my laptop will further damage. Someone please help me so I can fix it at home. How can I fix this issue? I do not want to get a new screen. I know I don’t have to.


  10. Well, I just paid $100 yesterday to have my laptop repaired.

    It booted fine but backlight didn’t work properly. I could see the log in screen barely.

    And, if I shut it down and walked away, it would mysteriously reboot itself.

    So, like I said, I took it in.

    The prior issue was with the button and he said that the clip for the wire wasn’t staying in. So he had to glue it in.

    After that, it worked for a year with no problems.

    So, I figured that this was all it was, but I couldn’t figure out HOW it came loose again.

    I never move the daggone thing off the desk. I don’t travel with it. I rarely close the lid.

    Well, I picked it up at the shop last night. It was a bad wire he said.

    It worked. It rebooted. No problems.

    I set it up on the desk last night, opened the lid and push the button and the same thing happened!!!!

    So, I’m about in tears because I’m on Soc. Sec. and I’m almost flat broke. I closed the lid and instead of picking up both corners, I opened the lid by the right corner, pushed the button and what do you know…it worked!

    My laptops lid is flexible. And that seems to be a problem.

    Never set anything on it when the lid is closed. It can bend and damage it.

    Once, it was raining, and I put the laptop in it’s soft carry case and had to put it behind the driver’s side seat (we have a pickup truck) and that could have bent it slightly because that’s when all of the trouble started.

    If these laptops don’t come in hard cases, they can bend.

  11. Hi,

    My laptop (hp pavilion dv6) screen keeps flickering with a small red line that appears at the left side of the screen. I have been having this issue from 3 months but now its getting worse. For testing purpose, I projected the laptop on an external LCD screen with the Duplicate option selected, after doing this the flickering stopped in my laptop but the external LCD screen flickers. The minute I disconnect them, my laptop starts flickering again.

    What could be the reason behind this issue? Is it the LCD cable or the graphics card that’s causing this?

  12. Hello
    I hope you can help me.
    I have a laptop that didn’t boot.
    I didn’t have time to fix it, so it was not working for 2 months.
    Ater 2 months I fix it (Motherboard Power problem).
    Now it has other problem, the screen is too yellow.
    The white things, like txt file, are vanilla yellow. And the image is not so bright as it should be (I compare it with other laptop) but it is enough bright to be perfectly visible. Just not as bright as it should be.
    The problem is not the Motherboard, or software, because I connect external monitor and the image is normal.
    Could it be the screen backlight? An aging backlight makes the image yellow?
    Thank you

    1. Hi. I’m not sure if you can help but I’ve exhausted all avenues. A couple of weeks ago on start up the appearance seemed to have changed. This came after the windows updates I think it didn’t want to update and took numerous attempts. After this everytime I shutdown pc at night the screen start up and then after 2 seconds goes blank. I found a solution to this and found that you had to turn desktop monitor button on and off numrous times and eventually it does come bright enough to see. Now weeks later after trying everything I now takes about 50 times of turning monitor on and off button before it comes on properly and stays on

      I didn’t know if it was drvier updates or what. I’ve tried all sorts and changing start ups. Exactly the same happens in safemode. comes on 2 seconds then cannot see until you’ve pressed on and button until it comes on properly

      Once its on its all fine. You can restart once you’ve done the above and it comes back on as it should. I’ve stopped it going to sleep and it must be kept on all day long whether used or not. This only happens after being shut down over night and turning on first thing the following day

      Does anyone know what this is and how to fix it ?

      I cannot restore. For some reason there is NO option to do this on pc like normal. I’m running on windows 7 profession 64bit and dell monitor E196FP. I don’t have another monitor to test it with either

      any solutions would be appreciated. thanks

    2. Hi Bruno this will not be your graphic or video card issue as if it was you would not get a normal image from your lap~top with these problems, As i have a problem like this with my HP Pavilion DV6 as these lap~tops with alot of machine power now a days are familiar with these kind of faults in the future when buying them, As i now have the same problems on my screen with dark pink/purple like rings and my screen colors are not normal but works perfect on other monitors this is highly likely the same problem you are having with yours so there fore my friend it will be a back light issue 90% 10% Graphic Card, From W.A Smith.

    3. Hi Bruno,

      That’s exactly what I’m expeariencing right now. Could I ask if yours has turned to normal? If yes, do you mind sharing me some resolution?

      I’m real in rush of work now and this vanilla yellow light makes me sick. I’ve just purchased this Lenovo Ideapad 710s in Sep 2016, have no idea why and how to fix it before having time to bring it to the warranty center.

      Looking forward to your reply,

      Wish you best.

    1. Hmm.. I think the inverter connected to the main LCD is the problem. It might be loose or worn out to receive any current.

      I previously had an HP 14-b132tx and it has a problem similar. But mine shows all white, but when I bend the monitor gently, the display works perfectly buy if I release it, it goes either black, white or a mosaic of many colors (lol).

      The solution I did is:
      I open the Monitor (LCD case) and get a roll of tissue or cardboard.
      Put it inside. Behind the LCD. and gently close it.
      Do not overstuff or else you are risk of damaging your LCD further.

      Rinse and repeat until it works.

  13. Hello my laptop screen works when i get in to windows after few minutes is getting dark with a colored line on left of the screen. Is getting fine after few minutes the same.

  14. i need help pls..
    when i touch my hp laptop lcd(monitor) from any place or move it or sometimes when i touch the laptop like typing with the keyboard(or any kind of moving the laptop) the colors gets lighter & keeps going light and normal as long as i keep touching or oving the laptop
    i notice it when i’m using google chrome for example you know that grey bar for bookmarts turns to light gray that sometimes looks white

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