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9 Posts
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923
December 17th, 2021 06:00
Vertical Colored Lines on display
Hello
I have bought a Dell Inspiron 5559 laptop with Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz 2.40 GHz a few years ago. It was Ok, but today the display shows some vertical color lines (like the photo I have taken from it).
What is the problem and what do I must do to remove the problem? Meanwhile I have updated the windows, but it did not make the display better.
Thank you in advance.
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mohsenAmiri
9 Posts
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December 17th, 2021 06:00
How can I send direct message (as you ask) for you?
DELL-Cares
Moderator
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27.5K Posts
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December 17th, 2021 06:00
Hello, I see you are looking for technical assistance. If you need our help, you could start a direct message with us and we will be happy to assist you.
ejn63
10 Elder
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30.2K Posts
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December 17th, 2021 06:00
Start by running a screen diagnostic -- hold D through powerup. If the fault shows on the test screens, the screen is bad and will need to be replaced.
If it does not, the problem is elsewhere -- either a bad display cable or a bad mainboard.
mohsenAmiri
9 Posts
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December 24th, 2021 07:00
ejn63
I tried to do screen diagnostic as you guided. But nothing happened and the PC started as usual.
I mean I pressed D key while the PC was coming up.
What is your idea?
ejn63
10 Elder
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30.2K Posts
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December 24th, 2021 08:00
You need to hold the D key and then press the power key, holding D through powerup until the screen self-test starts.