Symptom
Common display issues with symptoms:
Blank/black video
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Incorrect/missing color/distorted image
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Flickering image
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Vertical lines (due to LDVS, decreased signal integrity, and data loss)
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Dead pixel (due to display liquid, internal transistor, etc.)
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Horizontal lines (due to video memory)
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Distorted when hot (due to thermal issue)
Cracked screen/image (physical damage)
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Light leakage/bleeding
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Contact support for assistance.
Humming noise (due to frequency settings)
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Contact support for assistance.
Table 7-27
Display anomalies
Cracked screen
Quick check
Visually examine the display for cracked screen, liquid crystal leak, dirty spots on glass, etc.
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Reset and update BIOS and docking firmware.
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Update operating system (OS), graphics/video drivers (Intel/AMD/NVidia, etc).
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Dead pixel
Display anomalies
Cracked image
Vertical lines
Common issues and possible solutions 111
Blurred image
Horizontal lines