Laptop LCD screen with horizontal lines.

Posted on 2009-04-30
Last Modified: 2013-11-06

Note: this lines are diferent like from those lines in a broken screen,
this lines shake and shake till nothing can be seem in the total screen.

I have a laptop that has horizontal lines running across the screen.
when i start the laptop there are no lines at all, i can see everything,
the welcome screen and everything, but after a minute or so, the screen
start shaking and lines start to apear, sometimes those lines are horizonatal
and sometimes vertical and because of that i can't see nothing on the screen.

it will be nice if someone can help me with this, or get some info on this issue.

Question by:at_the_biginning
    LVL 8

    Expert Comment

    best thing for you to do is test an external monitor connected to your laptop.

    If the same problem occurs on the external monitor it is going to be either your motherboard or VGA board depending on the design of your laptop. Either of which usually are indicative of it time to replace your laptop assuming it is out of warranty.

    If the problem does occur on the external monitor than it is just either your LCD panel or the Cable Box Assy. This would usually need to be tested by an IT professional 99.9% it will not the the LCD cable it will be the panel. depending on the size and quality of your panel this could also be an incredibly expensive component to replace.

    Hope this helps


    Author Comment


    Hi Kavostylin,

    I did this before but did not give me results.
    It is assumed that when i connect an external monitor the image form the laptop
    should be seen but it doesn't show anything even if i press Fn+F7

    I have tried this method many times with desktops and laptops and when you connect
    an external monitor the image form that pc or laptop suppose to show up in the monitor,
    but in this case when i connect the external monitor to the laptop, the grren monitor light
    turn orange then the monitor goes on standby.

    LVL 8

    Accepted Solution

    Then it is more than likely your graphics controller that is faulty.

    In my experience it is going to be a costly experience to replace it as even if it is in the form or a daughter board (board that connected to the mainboard) it is still going to be quite expensive.

    So i guess your options are as follows.

    1. Find out from your equipment manufacturer whether the GPU is located on the mainboard or on its own VGA board and consequently the Part Number Price and availability of the part. Thus giving you the information of whether it is worth replacing.

    2. Purchasing a new laptop. As the cost of mobile computing has plumted due to the fierce competition for market share between the top 5 IT&T vendors it may be a cheaper or more economical option for you to purchase new equipment with a manufacturers warranty.

    NOTE: I as a tech would always suggest purchasing the manufacturer's extended warranty it is usually quite inexpensive when you weigh up the cost's or replacing a component such as a mainboard or LCD panel and will ensure you get a good 3 years worth of use out of your laptop.


    Author Closing Comment

    Thanks Kavo, I'll fallow your advices. i was hopping to fix this issue
    but i think you right.
    LVL 8

    Expert Comment

    Glad to be of assistance!!!


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