Maintenance and Service Guide
Table Of Contents
- Computer features
- Illustrated parts catalog
- Routine care, SATA drive guidelines, and disassembly preparation
- Removal and replacement procedures
- Preparation for disassembly
- Access panel
- Optical drive
- Hard drive
- Front bezel
- Removing the slim bezel blank
- Memory modules (DIMMs)
- Expansion card
- WLAN module
- Serial port
- Hood lock
- Hood sensor
- Fan
- Option board
- Heat sink
- Processor
- Drive cage
- Solid-state drive
- Battery
- USB board
- Card reader
- Speaker
- Power supply
- System board
- Wireless antennas and cables
- Troubleshooting without diagnostics
- Before you call for technical support
- Helpful hints
- Solving general problems
- Cannot access the Computer Setup (F10) Utility when booting the computer
- Computer appears locked up and will not turn off when the power button is pressed
- Computer will not respond to keyboard or mouse
- Computer date and time display is incorrect
- There is no sound or sound volume is too low
- Cannot remove computer cover or access panel
- Poor performance
- Computer powered off automatically and the power light blinks red four times and then white two times
- System does not turn on and the lights on the front of the computer are not blinking
- Solving power problems
- Power supply shuts down intermittently
- Computer turned off automatically, power light blinks red two times followed by a two-second pause, and the computer beeps two times (Beeps stop after fifth iteration but lights continue blinking)
- Power light blinks red four times followed by a two-second pause and the computer beeps four times (Beeps stop after fifth iteration but lights continue blinking)
- Solving hard drive problems
- Solving audio problems
- Solving printer problems
- Solving keyboard and mouse problems
- Solving hardware installation problems
- Solving network problems
- Network driver does not detect network controller
- Network status link light never blinks
- Diagnostics reports a failure
- Diagnostics passes, but the computer does not communicate with the network
- Network controller stopped working when an expansion board was added to the computer
- Network controller stops working without apparent cause
- Cannot connect to network server when attempting remote system installation
- System setup utility reports unprogrammed EEPROM
- Solving memory problems
- System will not boot or does not function properly after installing additional memory modules
- Out of memory error
- Memory count during POST is wrong
- Insufficient memory error during operation.
- Power light blinks red five times followed by a two-second pause and the computer beeps five times (Beeps stop after fifth iteration but lights continue blinking)
- Solving USB flash drive problems
- Solving internet access problems
- Solving software problems
- Computer Setup (F10) Utility
- POST error messages
- Password security and resetting CMOS
- Using HP PC Hardware Diagnostics
- Using HP PC Hardware Diagnostics Windows (select products only)
- Using HP PC Hardware Diagnostics UEFI
- Using Remote HP PC Hardware Diagnostics UEFI settings (select products only)
- Backing up, restoring, and recovering
- Statement of memory volatility
- Power cord set requirements
- Specifications
- Index
SolutionCause
Press and hold the power button for less than 4 s. If the hard drive light turns
white, then:
1. If the computer has a voltage selector, check that the voltage selector
(located on the rear of the power supply) is set to the appropriate
voltage. Proper voltage setting depends on your region.
2. Remove the expansion cards one at a time until the 5V_aux light on the
system board turns on.
3. Replace the system board.
OR
Press and hold the power button for less than 4 s. If the hard drive light does
not turn white, then:
1. Check whether the unit is plugged into a working AC outlet.
2. Open the access panel and check that the power button cable is
properly connected to the system board.
3. Check that the power supply cables are properly connected to the
system board.
4. Check to see if the 5V_aux light on the system board is turned on. If it is
turned on, then replace the power button assembly.
5. If the 5V_aux light on the system board is o, then replace the power
supply.
6. Replace the system board.
System unable to power on.
Solving power problems
These tables provide common causes and solutions for power problems.
Power supply shuts down intermittently
Use this information to troubleshoot the computer.
SolutionCause
Select the proper AC voltage using the selector switch.If the computer has a voltage selector, voltage
sel
ector switch on rear of computer chassis
(some models) not switched to correct line
voltage (115 V or 230 V).
Replace the power supply.Power supply will not turn on because of
int
ernal power supply fault.
Computer turned
o automatically, power light blinks red two times followed by a
two-second pause, and the computer beeps two times (Beeps stop after fth iteration
but lights continue blinking)
Use this information to troubleshoot the computer.
56 Chapter 5 Troubleshooting without diagnostics