Acer Aspire 4750Z Support Question
Acer Aspire 4750Z Support Question
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Question posted by kcbi on December 26th, 2013
How To Remove Bios Password On Acer Aspire 4750z Notebook
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Current Answers
Answer #1: Posted by TechSupport101 on January 8th, 2014 1:04 AM
TechSupport101
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Related Acer Aspire 4750Z Manual Pages
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 1
Aspire 4750 and 4750G Series Service Guide
Service guide files and updates are available on the ACER/CSD web; for more information,
please refer to http://csd.acer.com.tw
PRINTED IN TAIWAN
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 7
... Block Diagram 4 Your Acer Notebook tour 5
Top view 5 Hotkeys 6 Closed front view 7 Rear view 7 Left view 7 Right view 9 Base view 9 Hardware Specifications and Configurations 11 BIOS Setup Utility 19
System Utilities 19
Navigating the BIOS Utility 20 Information 21 Main 22 Security 24 Boot 28 Exit 29 BIOS Flash Utility 30 Remove HDD Password 31 Disassembly Requirements...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 8
... 64 Removing the LCD Bezel 65 Removing the LCD panel with the Brackets 66 Removing the LCD Brackets 70 Removing the FPC Cable 71 Removing the Web Camera 72 Removing the Microphone 74 Removing the ... 92 Undetermined Problems 92 Main Board 93
Connector Locations 93
Clearing Password Check and BIOS Recovery 96 Clearing Password Check 96 BIOS Recovery by Crisis Disk 97
FRU (Field Replaceable Unit) List ...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 13
...
Indicates the computer's battery status. 1. Fully charged: The light shows blue when in AC mode. Touch-sensitive pointing device which functions like a computer mouse. Your Acer Notebook tour
After knowing your computer features, let us show you around your computer. Chapter 1
5 Charging: The light shows amber when the battery is active.
Turns...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 19
H/W shot down at 110 ° .C BIOS
Item BIOS vendor BIOS Version Supported protocol
Specification
Phoenix
1.0
ACPI 1.0b/2.0/3.0 compliance, PCI 2.2, System/HDD Password Security Control, INT 13H Extenstions, PnP BIOS 1.0a SMBIOS 2.4, BIOS Boot Specification, Simple Boot Flag 1.0, Boot Block, PCI Bus Power Management Interface Specification, USB Specification 1.1/2.0, IEEE 1394 1.0, USB/1394 ...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 27
....XXX.XXXXXX XX.XX XXXXXXXXXXXXXXXXXXXXXXX Base Board Asset Tag Aspire 4750 Acer XXXxXxXX-xXxX-XXxx-xXXx-xXXxXXxXxxXX
F1 Help Esc Exit
Select Item -/+ Change Values
F9 Setup Defaults
Select Menu Enter Select Sub-Menu F10 Save and Exit
Chapter 2
19 To activate the BIOS Utility, press F2 during POST to enter multi-boot...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 29
...BIOS Version: KBC Version: Serial Number: Asset Tag Number: Product Name: Manufacturer Name: UUID:
Intel (R) Core (TM) i7-2720QM CPU @ 2.20 GHz 2.20GHz XXXXXXXXXXX-(XX) XXXXXXXX XXXXXXXXXXX-XXX XX-XXXX-(XX) VX.XX XX-XXX XXXXXX.XXX.XXX.XXX.XXXXXX XX.XX XXXXXXXXXXXXXXXXXXXXXXX Base Board Asset Tag Aspire 4750 Acer... Number ATAPI Model Name System BIOS Version VGA BIOS Version KBC Ver Serial Number ...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 32
... Exit
Select Item -/+ Change Values
F9 Setup Defaults
Select Menu Enter Select Sub-Menu F10 Save and Exit
NOTE: Please refer to "Remove HDD/BIOS Password" section if you need to know how to remove HDD/BIOS Password.
24
Chapter 2
Security
The Security screen contains parameters that help safeguard and protect your computer from unauthorized use.
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 33
... appear on the screen.
3. If you forget your dealer to your password, you have to return your notebook computer to reset it. Retype the password in the "Enter New Password" field. If desired, you set , this group happened. Shows the setting of parameters.
Removing a Password
Follow these steps as you can not either enter the Setup...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 34
... changes and exit the BIOS Setup Utility. If the current password entered does not match the actual current password, the screen will display as following.
When you the Setup Warning.
26
Chapter 2
The Set Password box appears:
2. Retype the password in the Enter New Password and Confirm New Password fields. Type the current password in the Enter Current...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 39
... the HDD password error code.
2. These passwords are master password. Key in one of master password will appear on the screen.
• If you need to solve HDD password locked problem, you key in the wrong HDD password thrice, "HDD password error code" will be diplayed.
3. Remove HDD Password
This section teaches you how to remove HDD password: Remove HDD Password:
• If...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 88
... total power remaining when installed in the BIOS Setup Utility menus, reset the computer, enter Setup and install Setup defaults or correct the error.
80
Chapter 4 Remove the battery pack and measure the voltage ...possible FRU to correct the problem. If the battery status indicator does not light up, remove the battery pack and let it has been configured. NOTE: Perform the FRU replacement or...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 89
... List
Error Codes 006
010 070 071 072 110
Error Messages
Equipment Configuration Error Causes: 1. Incorrect password is specified.
IDE Primary Channel Master Drive Error (THe causes will show message. Battery critical LOW In this situation BIOS will shut down system, no message will be shown before "Equipment Configuration Error")
Memory Error...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 95
...Jump to boot operating system One short beep before boot Terminate QuietBoot (optional) Check password (optional)
87 Code 82h 83h 84h 85h 86h 87h
88h 89h 8Ah 8Bh 8Ch... onboard I/O ports Configure Motherboard Configurable Devices (optional) Initialize BIOS Area Enable Non-Maskable Interrupts (NMIs) Initialize Extended BIOS Data Area Test and initialize PS/2 mouse Initialize floppy controller...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 96
... (optional) Initialize notebook docking late Force check (optional) Extended checksum (optional) Unknown interrupt Initialize the chipset Initialize the bridge Initialize the CPU Initialize the system timer Initialize system I/O Check force recovery boot Checksum BIOS ROM Go to BIOS Set Huge Segment Initialize Multi Processor Initialize OEM special code Initialize PIC and DMA Initialize...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 99
...The system doesn't resume from standby mode after opening the LCD. LCD cover switch System board
Remove battery pack and let it cool for 2 hours. Hard disk connection board System board
Peripheral-... or more keys) does not work correctly. USB does not work . Action in Sequence
Enter BIOS Setup Utility to execute "Load Default Settings", then reboot system. The system doesn't resume from ...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 104
... BIOS will ask for clearing the BIOS password (Supervisor Password and User Password).
96
Chapter 5 Press the F2 key to turn on the computer until the BIOS POST routine is necessary to bypass the password check, the user needs to short the hardware gap to clear the password by following these steps:
• Power off the system, and remove...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 147
...'s manuals • Training materials • Bios updates • Software utilities • Spare parts lists • TABs (Technical Announcement Bulletin) For these to optimize and improve our services, so if you can be obtained directly from Acer CSD Taiwan. We are : • Detailed information on all of Acer's Notebook, Desktop and Server models including:
•...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 149
... 30
antennas
removing 74 Audio 15
B
back cover
removing 38
battery pack
removing 36 BIOS 11
vendor 11 Version 11 BIOS Recovery 96 BIOS Recovery Boot Block 97 BIOS Recovery by Crisis Disk 97 steps 97 BIOS Recovery Hotkey 97 BIOS Utility 19-30 Navigating 20 System Security 29
brightness
hotkeys 6
C
Clearing BIOS Password
steps 96 Clearing Password 96
CPU
removing 60 CPU...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 150
...29 Information 21 Security 24 Model Definition 113
N
notebook tour 5
O
Online Support Information 139
P
password
changing 26 removing 25 setting 25 Power Adapter Check 79 Power ... 11 System Utilities 19
T
Test Compatible Components 135
touchpad and button boards
removing 47 Touchpad Check 80 Troubleshooting 77
U
Undetermined Problems 92
utility
BIOS 19-30
V
142
view
bottom 9 front 7 left 7 rear 7...
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