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
1. Be sure that the computer air vents are not blocked and the processor
cooling fan is running.
2. Open the access panel, press the power button, and see if the processor
fan (or other system fan) spins. If the fan does not spin, be sure that the
fan cable is plugged onto the system board header.
3. If the fan is plugged in and not spinning, replace it.
Processor thermal protection activated. A fan
might be blocked or not turning, or the heat sink
is not properly attached to the processor.
Power light blinks red four times followed by a two-second pause and the computer
beeps f
our times (Beeps stop after fth iteration but lights continue blinking)
Use this information to troubleshoot the computer.
SolutionCause
1. If the computer has a voltage selector, check that the voltage selector,
l
ocated on the rear of the power supply (some models), is set to the
appropriate voltage. Proper voltage setting depends on your region.
2. Open the access panel, and be sure that the power supply cable is
seated into the connector on the system board.
3. Check whether a device is causing the problem by removing all attached
devices (such as hard drives or optical drives and expansion cards). Turn
on the system. If the system enters POST, then power o and replace
one device at a time and repeat this procedure until failure occurs.
Replace the device that is causing the failure. Continue adding devices
one at a time to ensure all devices are functioning properly.
4. Replace the power supply.
5. Replace the system board.
Power failure (power supply is overloaded).
Solving hard drive problems
These tables provide common causes and solutions for hard drive problems.
Hard drive error occurs
Use this information to troubleshoot the computer.
SolutionCause
1. In Windows 10, type
file in the taskbar search box, and then select
File Explorer
from the list of applications. In the left column, expand
This PC
, right-click a drive, select Properties, and then select the Tools
tab. Under Error checking
, select Check.
2. Use a utility to locate and block usage of bad sectors. If necessary,
r
eformat the hard disk.
Hard disk has bad sectors or has failed.
Disk transaction problem
Use this information to troubleshoot the computer.
Power light blinks red four times followed by a two-second pause and the computer beeps four times (Beeps stop after f
th
iteration but lights continue blinking) 57