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Black horizontal line suddenly came on my laptop
Hello, hope so everyone is doing great. Today I faced a problem related to the screen. my laptop was working fully fine. i turned it off and after a little while, I came to open it. when I turn the laptop on I saw a little black horizontal line on the screen top right. For a little while I ignored it but when I turned it off and then I turned it on it was a little longer than before. Please help me, Thanks. My laptop model is Dell latitude E5540. i don't know what to do and what is the reason because I didn't hit it with anything or anything because of which screen can be damaged.
U2CAMEB4ME
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September 22nd, 2021 15:00
Welcome to the Dell Community @mrkhan123
Can you please post a pic/snip of the display???
Best regards,
U2
mrkhan123
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September 22nd, 2021 22:00
Thank you for connecting. this is the problem I am facing. as you can see a black line on the top right.
U2CAMEB4ME
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September 23rd, 2021 06:00
@mrkhan123
That looks like LCD bleeding.
When you go into the BIOS does it show there???
Hold down the "D" key, push the power button, release the power button, wait 2-3 seconds and release the "D" key
The laptop should go through an LCD test of solid White, Red, Green, Blue and Black 2 or 3 times.
Does it show during the test???
Regards,
U2
U2CAMEB4ME
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September 23rd, 2021 08:00
@mrkhan123
How to Run the LCD Built-in Self-Test on a Dell Laptop:
https://www.dell.com/support/kbdoc/en-us/000134936/how-to-run-the-lcd-built-in-self-test-on-a-dell-laptop
regards,
U2
mrkhan123
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September 23rd, 2021 08:00
Can you please guide me about it? i search a lot about it but I didn't understand how to do it. If you share the link where I can see the complete process of the check I will be very grateful.
mrkhan123
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September 23rd, 2021 09:00
Thank you. I will check out and will share the result with you
mrkhan123
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September 23rd, 2021 09:00
I ran the test and the black horizontal line was still present while the color was changing in background. Can you please tell me what was the reason and now what to do?
U2CAMEB4ME
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September 23rd, 2021 10:00
@mrkhan123
Sorry to say but that is a defective LCD display.
You can search your Service Tag to find the original configuration and display part number.
https://www.dell.com/support/manuals/en-us/latitude-e5540-laptop/delllatitudee5540_om/working-on-your-computer?guid=guid-9ccd6d90-c1d1-427f-9e77-d4f83f3ad2b6&lang=en-us
Dell Latitude E5540 Lcd Screens:
https://www.parts-people.com/index.php?action=category&id=140&subid=479&refine=lcd+screen
Best regards,
U2