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
Password security and resetting CMOS8
This computer supports two security password features that you can establish through the Computer Setup
Utilities menu: administrator password and power-on password.
When you establish only an administrator password, any user can access all the information on the computer
except Computer Setup. When you establish only a power-on password, the power-on password is required to
access Computer Setup and any other information on the computer. When you establish both passwords, only
the administrator password will give you access to Computer Setup.
When both passwords are set, you can use the administrator password in place of the power-on password as
an override to log in to the computer. This feature is useful for a network administrator.
IMPORTANT: Back up the BIOS settings or save them as custom defaults in case you need them later. You
can back up in Computer Setup or with the BiosCongUtility tool available from www.hp.com. See Computer
Setup (F10) Utility on page 71 for information about backing up the BIOS settings.
Changing a setup or power-on password
Use this procedure to change a password.
To change the power-on or setup password, complete the following steps:
1. Turn on or restart the computer.
To change the setup password, go to step 2.
To change the power-on password, go to step 3.
2. To change the setup password, as soon as the computer turns on:
- Press e
sc while the “Press the ESC key for Startup Menu” message is displayed.
- Press f10 to enter Computer Setup.
3. When the key icon appears, type your current password, a slash (/) or alternate delimiter character,
your new password, another slash (/) or alternate delimiter character, and your new password again as
shown:
current password/new password/new password
NOTE: Type the new password carefully because the characters do not appear on the screen.
4. Press ent
er.
The new password will take eect the next time the computer is restarted.
Deleting a setup or power-on password
Use this procedure to delete a password.
To delete the power-on or setup password, complete the following steps:
Password security and resetting CMOS 91