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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).
For custom images, HP highly recommends upgrading or installing Windows in UEFI mode (or Legacy
disabled) to fully support hybrid graphics and avoid unexpected behaviors (i.e., blue screen error,
graphics/video issues) in the BIOS Legacy setting.
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Configure Windows settings (Power options, Screen brightness, Personalization, Screen resolution, etc.).
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Test with a verified working external display.
Boot to Windows in safe mode.
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Test with a verified working operating system (i.e., shipping image).
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HP PC Hardware Diagnostics (UEFI) for video test
Use this tool to quickly determine if the display issue is related to a real hardware issue.
To start HP PC Hardware Diagnostics (UEFI)
computer is at boot, press the
There are three options:
Video Memory Check: to test video memory
●
Palette Check: to test the three video color components (red, green, blue)
●
●
Dead Pixel Check: to check dead pixels in eight different colors (Dead Pixel Check is available with the
"HP PC Diagnostics 3-in-1 USB Key" tool)
Review the video troubleshooting in the Display section below for specific issues and possible solutions. For
additional information about display problems, refer to documentation provided by the product
manufacturer.
Display assembly diagram
The display assembly diagram shows basic video components: system board, graphics cards, display cables,
display connectors, operating system (OS), graphics driver, and LCD display panel. Any component or a
combination of these components can contribute to a video issue.
114 Chapter 8 Troubleshooting guide
(6. HP Hardware Diagnostics and Tools on page
F2
key, select Component Tests, and then select Video.
84), when the
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Table of Contents
Troubleshooting
