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
Table 8-26 Issues, possible causes, and xes (continued)
Items Procedures
Warning message displayed in
Window
Less powerful AC adapter, BIOS out of date.
Troubleshooting steps
1. Update BIOS that may contain a table that
assigns an appropriate adapter for a certain
conguration.
2. Update the latest HP Hotkey Support software
from Drivers website.
3. Verify sucient power source (where adapter is
connected).
4. Use appropriate AC adapter (often supplied with
system) for optimum system performance.
5. Test with a veried working AC adapter.
6. Test the adapter on a veried working computer.
7. Contact HP for conguration details.
Note HP Smart AC adapter warning message: informs you
that as power demands increase, the notebook may
not perform at full capacity, which may result in
longer battery-charging time. In cases of extreme
power demands, the system may also throttle back
the processor, or with systems that have a discrete
video sub-system, a video balance mode may occur to
further balance the power needs of the system.
System processor functions always have priority over
battery charging, so charging delays will occur rst.
Incorrect time and date
Table
8-27 Issues, possible causes, and xes
Item Procedure
Symptom
Incorrect date and time
Possible cause
Real-time clock (RTC) battery might need replacement.
Troubleshooting steps
1. Reset the date and time in the operating system Control Panel.
2. Replace the RTC battery.
3. Verify that date and time are correct.
112 Chapter 8 Troubleshooting guide