Acer Aspire 7540 Service Guide

Chapter 233
Security
The Security screen contains parameters that help safeguard and protect your computer from unauthorized 
use.
NOTE: Please refer to “Remove HDD/BIOS Password” section if you need to know how to remove HDD/BIOS 
Password.
Phoenix   SecureCore(tm)   Setup   Utility
Main
F1
EscHelp
ExitSelect    Item
Select    Menu
Change   Values
Select         Sub-Menu -/+
EnterF9
F10Setup   Defaults
S a v e   a n d   E x i t
Information Security Boot Exit
Item   Specific   Help
Supervisor   Password...

34Chapter 2
The table below describes the parameters in this screen. Settings in boldface are the default and suggested 
parameter settings.
NOTE: When you are prompted to enter a password, you have three tries before the system halts. Don’t forget 
your password. If you forget your password, you may have to return your notebook computer to your 
dealer to reset it.
Setting a Password
Follow these steps as you set the user or the supervisor password:
1.Use the up/down keys to highlight the Set Supervisor...

Chapter 235
1.Use the up/down keys to highlight the Set Supervisor Password parameter and press the Enter key. The 
Set Password box appears:
2.Type the current password in the Enter Current Password field and press Enter.
3.Press Enter twice without typing anything in the Enter New Password and Confirm New Password fields. 
The computer then sets the Supervisor Password parameter to “Clear”.
4.When you have changed the settings, press F10 to save the changes and exit the BIOS Setup Utility.
Changing a...

36Chapter 2
If the new password and confirm new password strings do not match, the screen will display the following 
message. 

Chapter 237
Boot
This menu allows the user to decide the order of boot devices to load the operating system. Bootable devices 
includes the diskette drive in module bay, the onboard hard disk drive and the CD-ROM in module bay.
Phoenix   SecureCore(tm)   Setup   Utility
Main
Item   Specific   Help
U s e   <   >   o r   <   >   t o
select   a   device,   then
p r e s s   < F 6 >   t o   m o v e   i t
u p   t h e   l i s t ,   o r   < F 5 >
t o   m o v e   i t   d o w n   t h e
list.   Press      to
escape...

38Chapter 2
Exit
The Exit screen contains parameters that confirmed or discard the changes made to the parameters in the 
BIOS Setup Utility.
The table below describes the parameters in this screen.
ParameterDescription
Exit Saving Changes Exit System Setup and save your changes to CMOS.
Exit Discarding Changes Exit utility without saving setup data to CMOS.
Load Setup Default Load default values for all SETUP item.
Discard Changes Load previous values from CMOS for all SETUP items.
Save Changes Save...

Chapter 239
BIOS Flash Utility
The BIOS flash memory update is required for the following conditions:
•New versions of system programs
•New features or options
•Restore a BIOS when it becomes corrupted. 
Use the Flash utility to update the system BIOS flash ROM.
NOTE: If you do not have a crisis recovery disk at hand, then you should create a Crisis Disk (See “Steps for 
BIOS Recovery by Crisis Disk” on page 107) before you use the Flash utility.
NOTE: Do not install memory-related drivers (XMS, EMS,...

40Chapter 2
Remove HDD Password
This section teaches you how to remove HDD password:
Remove HDD Password:
•If you key in the wrong HDD password thrice, “HDD password error code” will appear on the 
screen. See the image below.
•If you need to solve HDD password locked problem, you can run HDD_PW.EXE
1.Key in “hdd_pw 15494 0”
2.Select “2”
3.Choose one of the uppercase strings
•Reboot the system and key in “0KJFN42” or “UVEIQ96” as your HDD user password. 

Chapter 341
This chapter contains step-by-step procedures on how to disassemble the notebook computer for 
maintenance and troubleshooting.
Disassembly Requirements
To disassemble the computer, you need the following tools:
•Wrist grounding strap and conductive mat for preventing electrostatic discharge
•Flat screwdriver
•Philips screwdriver
•Hex screwdriver
•Plastic flat screwdriver
•Plastic tweezers
NOTE: The screws for the different components vary in size. During the disassembly process, group the...

42Chapter 3
General Information
Pre-disassembly Instructions
Before proceeding with the disassembly procedure, make sure that you do the following:
1.Turn off the power to the system and all peripherals.
2.Unplug the AC adapter and all power and signal cables from the system. 
3.Place the system on a flat, stable surface. 
4.Remove the battery pack.
Disassembly Process
The disassembly process is divided into the following stages:
•External module disassembly
•Main unit disassembly
•LCD module...