Maintenance and Service Guide
Table Of Contents
- Product description
- Components
- Illustrated parts catalog
- Removal and replacement procedures preliminary requirements
- Removal and replacement procedures for Customer Self-Repair parts
- Removal and replacement procedures for authorized service provider parts
- Interpreting system validation diagnostic front panel LEDs and audible codes
- Troubleshooting guide
- Resources
- General troubleshooting steps
- Identify the issue
- Analyze the issue
- Resolve the issue
- Verify solution
- Helpful Hints
- Common issues and possible solutions
- Additional information
- Acronyms
- Blinking lights and boot error codes
- Processor not executing code
- BIOS recovery code unable to find valid BIOS recovery image
- Memory module error
- Graphics Controller Error (No Controller)
- Failure - System Board Error
- Intel Trusted Execution Technology (TXT) Error
- Sure Start unable to find valid BIOS Boot Block image
- Sure Start has identified a problem (Manual Recovery Policy Set)
- POST error messages and user actions
- Routine maintenance for performance improvement
- Common blue screen error messages
- Use Windows Debugging Tool
- Display issue: pixel anomalies
- Cable management
- Connector types
- Computer Setup (BIOS), TPM, and HP Sure Start
- Using HP PC Hardware Diagnostics
- Backing up, restoring, and recovering
- Specifications
- Power cord set requirements
- Statement of memory volatility
- Recycling
- Index
Quick check
● Visually examine the display for cracked screen, liquid crystal leak, dirty spots on glass, etc.
● Reset and update BIOS and docking rmware.
● 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.
● Congure Windows settings (Power options, Screen brightness, Personalization, Screen resolution, etc.).
● Test with a veried working external display.
● Boot to Windows in safe mode.
● Test with a veried working operating system (i.e., shipping image).
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) (6. HP Hardware Diagnostics and Tools on page 84), when the
computer is at boot, press the F2 key, select Component Tests, and then select Video.
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 dierent 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 specic 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