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There are a few possible reasons. If you really mean "on" the screen, not "in" the screen, it could be something pressing against it - such as a plastic keyboard protector "skin" if your screen closes tight against your keyboard. Any screen cleaner will remove it, though you'll have to repeat the process periodically. If it's in the screen itself, the most likely cause is failure of the control circuits for that row of pixels. (Each row has a control circuit, as does each column; the row and column control circuits cooperate to set the three color intensities of each pixel.) There is no inexpensive fix for this. If your laptop is under warranty, its manufacturer should fix it for you. If not, the cost will vary with the computer but it won't be cheap. If that's a concern, your best bet might be to find another computer of the same type that died for an unrelated reason, buy it for parts salvage value, and pay a service facility to swap the screens.

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15y ago
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14y ago

This is well known issue with many iMacs G5 and Intel based. It is probably a defect in design. See the following link for a possible law suit against Apple.

http://www.cultofmac.com/class-action-lawsuit-over-imac-display-problems/6562

There is also an online petition to sign at:

http://www.petitiononline.com/mod_perl/signed.cgi?maclines

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11y ago

A blank line in the laptop screen is a malfunction of the pixels on that line. This can be caused by circuit imperfections or damage, mainly the integrated circuitry which acts as the driver for that particular line. Sometimes gently rubbing the sides of the lines reconnects the circuits but it is not a long term replacement strategy.

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16y ago

There are many reasons, but the most common of them all is the refresh rate. usually the best refresh rate is 59-60Hz.

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15y ago

A glitch or it is probably not responding/fast enough

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12y ago

Because you dont have the correct video drivers. To find the get the name of your mother and or graphics card and go to there website. You can usually find them in the support section ....

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11y ago

I wound up throwing mine away. But that is just me.

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Q: What causes a line in laptop monitor screen?
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