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Old 03-15-2018, 08:21 PM
 
10,956 posts, read 15,245,469 times
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These appear intermittently.
Is this a failing monitor?
Attached Thumbnails
Horizontal lines on screen-ss-00111111.jpg  
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Old 03-16-2018, 08:21 AM
 
Location: Diaspora
21,540 posts, read 24,674,751 times
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Or failing video card.
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Old 03-26-2018, 02:28 AM
 
Location: 10110001010110100
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Go into BIOS settings and stay there long enough to see if it happened or not.
If it happened again, you have two suspects: monitor or video cable.
Video card may still be a suspect but if the card is indeed failing (not yet failed) you will notice longer boot times between turning on the PC/laptop and getting thru POST.

If not, quite possibly the video card or its drivers.
Try disconnecting and reconnecting both the monitor video and power cables to see if it helped.
Always start with the easiest and cheapest solution.
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Old 03-26-2018, 09:23 AM
 
Location: Cleveland, Ohio
11,818 posts, read 13,961,605 times
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Quote:
Originally Posted by oelyvier View Post
Last time I saw that, I did not hook my video cable tight enough.
Or a bad cable.
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Old 03-26-2018, 09:58 AM
 
Location: Florida -
9,039 posts, read 11,220,900 times
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My laptop recently did the same thing intermittently (along with going blank). The screen was bad, so I replaced it. No problems now. - It could have been a video cable/card, but, it was necessary to get inside to find out anyway. Once inside they determined the problem was the screen itself.

If you have a separate monitor, the bench charges and repair costs may be more than the cost of simply replacing the screen (as is the case with so many computer issues/parts today).
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Old 03-26-2018, 02:40 PM
 
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Assuming a desktop, not a laptop since the OP did not tell us.

If the video is not part of the motherboard reseat it. Only after checking all the things mentioned above.

Remove the card, look at the gold fingers. If they are "dirty" get a clean pencil eraser and rub the gold fingers. Use a dry cloth to wipe of any eraser bits that may have stuck to them. Reinsert video card.
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