Acer Aspire 4750Z Support Question
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Question posted by sajnmds on December 2nd, 2013
How To Reset Bios Password On Acer Aspire 4750z
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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 2
Date
Chapter
Updates
II Revision History
Please refer to the table below for the updates made on Aspire 4750 and 4750G Series service guide.
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 7
... 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...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 8
... Codes 85 Index of Symptom-to-FRU Error Message 89 Intermittent Problems 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 99
Exploded Diagram 100 113
Model Definition and Configuration 113...
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
... 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 Please also refer to enter setup. Press during POST (when "Press to "disabled". To activate the BIOS Utility, press...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 29
...: ATAPI Model Name: System BIOS Version: VGA 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...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 32
...] [Enter]
Item Specific Help
Set or clear the Supervisor account's password.
Password on Boot:
[Disabled]
F1 Help Esc 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...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 33
... the characters do not appear on Boot
Description
Shows the setting of the Supervisor password
Shows the setting of parameters. When set , this password protects the BIOS Setup Utility from unauthorized access. Defines whether a password is set , this password protects the BIOS Setup Utility from unauthorized access.
If desired, you can not either enter the Setup...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 34
..., press F10 to "Set". 5. Use the up /down keys to save the changes and exit the BIOS Setup Utility. Press Enter twice without typing anything in the Enter Current Password field and press Enter. 3.
Changing a Password
1. The Set Password box appears:
2. When you the Setup Warning.
26
Chapter 2 1. If the verification is complete after...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 88
...
If the touchpad doesn't work, do the following lists the error messages that the BIOS displays on the screen and the error symptoms classified by function. This index can occur...parameters shown in a short period of the 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...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 89
... issue 4 short beeps then shut down system, no message will shut down system, not show .
Incorrect password is specified. Chapter 4
81 CPU BIOS Update Code Mismatch 2. IDE Primary Channel Master Drive Error (THe causes will be shown before "Equipment Configuration Error")
Memory Error at xxxx:xxxx:xxxxh (R:xxxxh, W:...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 93
...Initialize PCI Bus Mastering devices Initialize keyboard controller BIOS ROM checksum Initialize cache before memory autosize 8254 timer initialization 8237 DMA controller initialization Reset Programmable Interrupt Controller Test DRAM refresh Test 8742... on data bits xxxx of low byte of memory bus Enable cache before system BIOS shadow RAM failure on data bits xxxx of high byte of memory bus Test ...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 95
... PnP ISA devices Re-initialize 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 Determine number of day Check... boot operating system One short beep before boot Terminate QuietBoot (optional) Check password (optional)
87
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 104
... the BIOS Password (Supervisor Password and/or User Password) for a security reason, the BIOS will ask for clearing the BIOS password (Supervisor Password and User Password).
96
Chapter 5 Clearing Password Check and BIOS Recovery
This section provides the standard operating procedures for clearing the password and BIOS recovery for the hardware gap on the main board as shown in Aspire Aspire...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 107
...regional web or channel. You MUST use the local FRU list provided by your regional Acer office on how to return it will not be noted on how to
dispose it properly, or... follow the rules set by your Acer office may have a DIFFERENT part number code from those given in global configurations of Aspire 4750/4750G Series.
Please note that WHEN ORDERING FRU PARTS,...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 122
Appendix A
Aspire 4750/4750G Series
NOTE: All models have following common specifications: LCD (NLED14WXGA+G), card reader (5-in-1), NB chipset (HM65), Webcam (0.3M DV)
Model
AS4750G338G50Mn
AS4750G338G50Mn
AS4750G338G50Mn
...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 147
... Appendix C
139 However some information sources will require a user i.d. and password. Also contained on Acer's International Traveller's Warranty (ITW) • Returned material authorization procedures •...email
contacts for all models • User's manuals • Training materials • Bios updates • Software utilities • Spare parts lists • TABs (Technical ...
Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 149
... 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 Fan True Value...
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 System Check 79 Battery Pack 80 ...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 right 9 view front 5
W
Windows 2000 Environment Test ...