HP Envy 4 Manual

							4.Remove the 1 Phillips PM 2.5x3 screw securing the keyboard to the bracket (1), disconnect the
keyboard cable (2) (pushing it through the bracket), and then remove the keyboard from the
bracket (3).
Reverse this procedure to install the keyboard.
Top cover
DescriptionSpare part number
Top cover686093–001
690194–001
Before removing the top cover, follow these steps:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.Remove the display panel (see 
Display panel on page 31).
5.Remove the base enclosure (see 
Base enclosure on page 33).
6.Disconnect the battery cable (see 
Battery on page 35.
Remove the top cover:
1.Turn the computer right-side up, with the front toward you.
2.Open the computer.
Component replacement procedures 63 
						

							3.Remove the 3 screws from each hinge on the top cover (1), and then remove the top cover (2).
Reverse this procedure to install the top cover.
WLAN antenna cables
Description Spare part numbers
WLAN antennas 686573–001
Before removing the antenna cables:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.Remove the display panel (see 
Display panel on page 31).
5.Remove the base enclosure (see 
Base enclosure on page 33).
6.Disconnect the battery cable (see 
Battery on page 35.
Remove the WLAN antenna cables:
64 Chapter 4   Removal and replacement procedures 
						

							▲Remove the WLAN antenna transceivers (1), and then remove the cables (2) from the right and
left sides of the hinge.
Display panel cable assembly
Description Spare part number
Display panel cable assembly 686576–001
Before removing the display panel cable assembly:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.Remove the display panel (see 
Display panel on page 31).
5.Remove the base enclosure (see 
Base enclosure on page 33).
6.Disconnect the battery cable (see 
Battery on page 35.
Remove the display panel cable assembly:
Component replacement procedures 65 
						

							▲Disconnect the display panel cable from the webcam, and then remove the cable on the left side
up to the left hinge.
Webcam assembly
Description Spare part numbers
Webcam assembly 686587–001
Before removing the webcam assembly:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.Remove the display panel (see 
Display panel on page 31).
5.Remove the base enclosure (see 
Base enclosure on page 33).
6.Disconnect the battery cable (see 
Battery on page 35.
Remove the webcam assembly:
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							▲Disconnect the webcam cable (1), and then remove the cable (2).
Display hinges and hinge covers
Description Spare part number
Display hinges 686583–001
Display hinge covers 691639–001
Before removing the webcam assembly:
1.Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.Disconnect all external devices connected to the computer.
3.Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.Remove the display panel (see 
Display panel on page 31).
5.Remove the base enclosure (see 
Base enclosure on page 33).
6.Disconnect the battery cable (see 
Battery on page 35.
Component replacement procedures 67 
						

							Remove the display hinge covers:
1.Remove the 1 Phillips PM screws that secures the display the left and right hinge covers (1), and
then remove the hinge covers (2).
2.Remove the 4 Phillips PM screws (2 on each side) that secure the hinge to the display panel (1),
and then remove the hinges (2).
68 Chapter 4   Removal and replacement procedures 
						

							5 Setup Utility (BIOS) and System
Diagnostics
Using Setup Utility
Setup Utility, or Basic Input/Output System (BIOS), controls communication between all the input and
output devices on the system (such as disk drives, display, keyboard, mouse, and printer). Setup
Utility includes settings for the types of peripherals installed, the startup sequence of the computer,
and the amount of system and extended memory.
NOTE:Use extreme care when making changes in Setup Utility. Errors can prevent the computer
from operating properly.
Starting Setup Utility
NOTE:An external keyboard or mouse connected to a USB port can be used with Setup Utility only
if USB legacy support is enabled.
To start Setup Utility, follow these steps:
1.Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup
Menu” message is displayed at the bottom of the screen.
2.Press f10 to enter Setup Utility.
Changing the language of Setup Utility
1.Start Setup Utility.
2.Use the arrow keys to select System Configuration > Language, and then press enter.
3.Use the arrow keys to select a language, and then press enter.
4.When a confirmation prompt with your language selected is displayed, press enter.
5.To save your change and exit Setup Utility, use the arrow keys to select Exit > Exit Saving
Changes, and then press enter.
Your change takes effect immediately.
Using Setup Utility 69 
						

							Navigating and selecting in Setup Utility
To navigate and select in Setup Utility, follow these steps:
1.Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup
Menu” message is displayed at the bottom of the screen.
●To select a menu or a menu item, use the tab key and the keyboard arrow keys and then
press enter, or use a pointing device to click the item.
●To scroll up and down, click the up arrow or the down arrow in the upper-right corner of the
screen, or use the up arrow key or the down arrow key.
●To close open dialog boxes and return to the main Setup Utility screen, press esc, and then
follow the on-screen instructions.
2.Press f10 to enter Setup Utility.
To exit Setup Utility menus, choose one of the following methods:
●To exit Setup Utility menus without saving your changes, press the esc key, and then follow the
on-screen instructions.
– or –
Use the arrow keys to select Exit > Exit Discarding Changes, and then press enter.
●To save your changes and exit Setup Utility menus, press f10, and then follow the on-
screen instructions.
– or –
Use the tab key and the arrow keys to select Exit > Exit Saving Changes, and then
press enter.
Your changes go into effect when the computer restarts.
Displaying system information
1.Start Setup Utility.
2.Select the Main menu. System information such as the system time and date, and identification
information about the computer is displayed.
3.To exit Setup Utility without changing any settings, use the arrow keys to select Exit > Exit
Discarding Changes, and then press enter.
70 Chapter 5   Setup Utility (BIOS) and System Diagnostics 
						

							Restoring factory settings in Setup Utility
NOTE:Restoring defaults will not change the hard drive mode.
To return all settings in Setup Utility to the values that were set at the factory, follow these steps:
1.Turn on or restart the computer, and then press esc while the “Press the ESC key for Startup
Menu” message is displayed at the bottom of the screen.
2.Press f10 to enter Setup Utility.
3.Use the arrow keys to select Exit > Load Setup Defaults.
4.Follow the on-screen instructions.
5.To save your changes and exit, press f10, and then follow the on-screen instructions.
– or –
Use the arrow keys to select Exit > Exit Saving Changes, and then press enter.
Your changes go into effect when the computer restarts.
NOTE:Your password settings and security settings are not changed when you restore the
factory settings.
Exiting Setup Utility
●To exit Setup Utility and save your changes from the current session:
If the Setup Utility menus are not visible, press esc to return to the menu display. Then use the
arrow keys to select Exit > Exit Saving Changes, and then press enter.
●To exit Setup Utility without saving your changes from the current session:
If the Setup Utility menus are not visible, press esc to return to the menu display. Then use the
arrow keys to select Exit > Exit Discarding Changes, and then press enter.
Updating the BIOS
Updated versions of the BIOS may be available on the HP Web site.
Most BIOS updates on the HP Web site are packaged in compressed files called SoftPaqs.
Some download packages contain a file named Readme.txt, which contains information regarding
installing and troubleshooting the file.
Using Setup Utility 71 
						

							Determining the BIOS version
To determine whether available BIOS updates contain later BIOS versions than those currently
installed on the computer, you need to know the version of the system BIOS currently installed.
BIOS version information (also known as ROM date and System BIOS) can be displayed by pressing
fn+esc (if you are already in Windows) or by using Setup Utility.
1.Start Setup Utility (BIOS).
2.Use the arrow keys to select Main.
3.To exit Setup Utility (BIOS) without saving your changes, use the tab key and the arrow keys to
select Exit > Exit Discarding Changes, and then press enter.
Downloading a BIOS update
CAUTION:To reduce the risk of damage to the computer or an unsuccessful installation, download
and install a BIOS update only when the computer is connected to reliable external power using the
AC adapter. Do not download or install a BIOS update while the computer is running on battery
power, docked in an optional docking device, or connected to an optional power source. During the
download and installation, follow these instructions:
Do not disconnect power from the computer by unplugging the power cord from the AC outlet.
Do not shut down the computer or initiate Sleep or Hibernation.
Do not insert, remove, connect, or disconnect any device, cable, or cord.
1.Windows 7—Select Start > Help and Support > Maintain.
Windows XP—Select Start > Help and Support, and then select the software and
drivers update.
2.Follow the on-screen instructions to identify your computer and access the BIOS update you
want to download.
3.At the download area, follow these steps:
a.Identify the BIOS update that is later than the BIOS version currently installed on your
computer. Make a note of the date, name, or other identifier. You may need this information
to locate the update later, after it has been downloaded to your hard drive.
b.Follow the on-screen instructions to download your selection to the hard drive. Make a note
of the path to the location on your hard drive where the BIOS update is downloaded. You
will need to access this path when you are ready to install the update.
NOTE:If you connect your computer to a network, consult the network administrator
before installing any software updates, especially system BIOS updates.
BIOS installation procedures vary. Follow any instructions that are displayed on the screen after the
download is complete. If no instructions are displayed, follow these steps:
1.Windows 7—Open Windows Explorer by selecting Start > Computer.
Windows XP—Open Windows Explorer by selecting Start > My Computer.
2.Double-click your hard drive designation. The hard drive designation is typically Local Disk (C:).
3.Using the hard drive path you recorded earlier, open the folder on your hard drive that contains
the update.
72 Chapter 5   Setup Utility (BIOS) and System Diagnostics