Acer Aspire 4752 Support Question
Acer Aspire 4752 Support Question
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Question posted by 4717t34 on July 15th, 2013
I Want My Passwoard Bios In Clear For Acer Aspire 4752 Series How
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Current Answers
Answer #1: Posted by TheWiz on July 15th, 2013 8:51 AM
TheWiz
Member since:
October 13th, 2011 Points: 25,383,424
Member since:
October 13th, 2011 Points: 25,383,424
Unfortunately it's not an easy process and will require quite a bit of technical knowledge but here is a guide on how to do it:
http://forums.mydigitallife.info/threads/2299-Guide-to-remove-BIOS-password-of-Acer-computer-(Both-Laptop-amp-Desktop)
Related Acer Aspire 4752 Manual Pages
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 2
... incidental or consequential damages resulting from any defect in any form or by Acer Incorporated.
There are available on the ACER/CSD website. All rights reserved.
ii Copyright
© 2011 by any ...information, go to http://csd.acer.com.tw.The information in this guide is subject to this guide is ". Disclaimer
The information in this Aspire 4752/4752G/4752Z/ 4752ZG/4352/4352G...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 5
Aspire 4752/4752G/4752Z/4752ZG/4352/4352G
CHAPTER 1 Hardware Specifications
Features 1-5 Operating System 1-5 Platform 1-5 System Memory 1-5 Display 1-5 Graphics 1-5 Storage Subsystem 1-6 Audio Subsystem 1-6 ... 1-16 Touchpad Basics 1-17 Keyboard 1-18 D2D Recovery 1-22 System Block Diagram 1-22
Specification Tables 1-23
CHAPTER 2 System Utilities
BIOS Setup Utility 2-3 Navigating the...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 6
...Flash Utilities 2-12
DOS Flash Utility 2-13 WinFlash Utility 2-13 Remove HDD/BIOS Password Utilities 2-14 Removing the HDD Password 2-14 Removing the BIOS Passwords 2-15 Clearing the BIOS Passwords 2-16 Using DMI Tools 2-17 LAN EEPROM Utility 2-17
CHAPTER 3 Machine Maintenance
Machine Disassembly and Replacement 3-5 Recommended Equipment 3-5 Replacement Requirements 3-5 Pre-disassembly...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 8
... 4-14 Bluetooth Failure 4-15 Card Reader Failure 4-16 Thermal Unit Failure 4-17 Other Functions Failure 4-18 Intermittent Problems 4-19 Undetermined Problems 4-19 Error Codes 4-20 BIOS Beep Codes 4-21
POST Codes 4-26 Component Codes 4-26 Progress Codes 4-31
CHAPTER 5 Jumper & Connector Locations
Mainboard Layout...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 9
CHAPTER 6 FRU List
Aspire 4752/4752G/4752Z/4752ZG/4352/4352G Exploded Diagrams 6-4
Main Assembly 6-4 LCD Assembly 6-6 FRU List 6-7
CHAPTER 7 Test Compatible Components
Microsoft Windows 7 Environment Test 7-4
ix
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 17
...61550;IEEE 802.11b/g/n Supports Acer SignalUp technology LAN: Gigabit Ethernet,...Broadcom NetLink® BCM57785X controller
Privacy Control 0 BIOS supervisor, user, and HDD passwords Kensington lock ...Aspire AC4T Flat keyboard Overlay numeric keys
Hardware Specifications and Configurations
1-7
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 32
... to save settings and close the BIOS Setup screen. 6. System Block Diagram 0
Figure 1-11. D2D Recovery 0
The Acer Disk to Disk (D2D) recovery function allows ... POST, press F1 to enter the system recovery partition. During POST, press Alt+F10 to access the BIOS Setup screen. 3. System Block Diagram
1-22
Hardware Specifications and Configurations Press to select the D2D...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 38
... specification revision 2.1 BIOS Boot specification v1.01 Simple boot flag specification v2.1 System management bus specification v2.0 AHCI support Microsoft XP/Vista/Windows 7 logo program Microsoft SLP 1.0 support Microsoft OA 2.0 and 2.1 support
Keyboard
Item
Specification
Type
Aspire AC4T Flat keyboard
Total number of keys...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 52
BIOS Setup Utility 2-3 Navigating the BIOS Utility 2-3
BIOS Flash Utilities 2-12 WinFlash Utility 2-13
Remove HDD/BIOS Password Utilities 2-14 Removing the HDD Password 2-14 Removing the BIOS Passwords 2-15 Clearing the BIOS Passwords 2-16
Using DMI Tools 2-17 LAN EEPROM Utility 2-17
2-2
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 57
...return the computer to safeguard and protect the computer from unauthorized use. BIOS Security
Table 2-3. Security 0
Use this tab to its dealer. System Utilities
2-7
BIOS Security
Parameter Supervisor Password Is User Password Is HDD Password State Set ...
NOTE: NOTE:
When prompted to enable password requirement during system boot
Option Clear or Set Clear or Set Clear or Set - - -
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 65
... computer. 7.
In the HDD password prompt, type the master password generated in step 5, then press
Enter. G2201 Hardware Gap
System Utilities
2-15 Removing the BIOS Passwords 0 To clear a lost BIOS password (user or supervisor password), you need to the "Clearing the BIOS Passwords" on the mainboard.
G2201
Figure 2-14. Write down the generated master password. 6.
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 66
...the system defaults. 11. Reinstall the battery pack and the lower case cover. 9. Clearing the BIOS Passwords 0
1. Press the button to short the two contacts on the computer and press.... If the prompt appears, repeat steps 4-9 until the BIOS passwords have been cleared. If no
password prompt appears, the BIOS passwords have been cleared. 10. Turn on the hardware gap together. 5. Shut...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 75
For example, if you want to any of the hardware components. Main Screw List Screw M2 x L3
M2 x L3 (black) M2.5 x L4 M2.5 x L5 M2.5 x L6 M3 x L4
Special Screw Thermal Screw
Quantity 4 12 4 2 21 2 1 6
Acer Part Number 86.E1562.2R0 86.00F80.723 86.00H36.534 86.00F87.735 86.00E12.536...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 175
... warm boot
13h
Initialize PCI Bus Mastering devices
14h
Initialize keyboard controller
16h
1-2-2-3
BIOS ROM checksum
17h
Initialize cache before memory autosize
18h
8254 timer initialization
1Ah
8237 ...to 4 GB
26h
Enable A20 line
28h
Autosize DRAM
29h
Initialize POST Memory Manager
2Ah
Clear 215 KB base RAM
2Ch
1-3-4-1
RAM failure on address line xxxx
2Eh
1-3-4-3
RAM ...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 177
... Extended BIOS Data Area
8Bh
Test and initialize PS/2 mouse
8Ch
Initialize floppy controller
8Fh
Determine number of ATA drives (optional)
90h
Initialize hard-disk controllers
91h
Initialize local-bus hard-disk controllers
92h
Jump to UserPatch2
93h
Build MPTABLE for multi-processor boards
95h
Install CD ROM for boot
96h
Clear...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 178
Table 4-3. BIOS Beep Codes
Code 99h
Beeps
POST Routine Description Check for SMART drive (optional)
9Ah
Shadow option ROMs
9Ch
...day
A2h
Check key lock
A4h
Initialize Typematic rate
A8h
Erase F2 prompt
AAh
Scan for F2 key stroke
ACh
Enter SETUP
AEh
Clear Boot flag
B0h
Check for errors
B2h
POST done- prepare to boot operating system
B4h
1
One short beep before boot
B5h
...
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 179
...the CPU
E3h
Initialize the system timer
E4h
Initialize system I/O
E5h
Check force recovery boot
E6h
Checksum BIOS ROM
E7h
Go to BIOS
E8h
Set Huge Segment
E9h
Initialize Multi Processor
EAh
Initialize OEM special code
EBh
Initialize PIC and DMA... Mode
F4h
1
Output one beep before boot
F5h
Boot to Mini DOS
F6h
Clear Huge Segment
F7h
Boot to Full DOS
Troubleshooting
4-25
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 188
Mainboard Layout 5-3 Clearing Password Check and BIOS Recovery 5-6
Clearing the BIOS Passwords 5-6 Performing a BIOS Recovery 5-7
5-2
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 196
Aspire 4752/4752G/4752Z/4752ZG/4352/4352G Exploded Diagrams 6-4
Main Assembly 6-4 LCD Assembly 6-4 FRU List 6-5
6-2
Aspire 4352, 4752, 4752G, 4752Z Service Guide - Page 197
... for repair and service of this chapter whenever ordering for parts to order FRU parts for the Aspire 4752/4752G/4752Z/4752ZG/4352/4352G.
Users MUST use the local FRU list provided by the regional Acer office on the regional web or channel. Refer to this printed Service Guide.
Part number changes will...
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