Gateway E 4100 Service Manual

Chapter 231
Remove HDD/BIOS Password Utilities
This section provides you with details about removing HDD/BIOS password methods:
Removing HDD Password:
If you key in the wrong HDD password three times, an error is generated.
To reset the HDD password, perform the following steps:
1.After the error is displayed, select the Enter Unlock Password option on the screen.
2.An Encode key is generated for unlocking utilities. Note down this key.
3.Execute the UnlockHD.EXE file to create the unlock code in DOS...

32Chapter 2
Removing BIOS Passwords:
To clear the User or Supervisor passwords, open the RAM door and use a metal instrument to short the 
CLRP2 jumper as shown below.
Cleaning BIOS Passwords
To clean the User or Supervisor passwords, perform the following steps:
1.From a DOS prompt, execute clnpwd.exe
2.Press 1 or 2 to clean the desired password shown on the screen.
The onscreen message determines whether the function is successful or not. 

Chapter 233
Miscellaneous Utilities
Using Boot Sequence Selector
Boot Sequence Selector allows the boot order to be changed without accessing the BIOS. To use Boot 
Sequence Selector, perform the following steps:
1.Enter into DOS.
2.Execute BS.exe to display the usage screen.
3.Select the desired boot sequence by entering the corresponding sequence, for example, enter BS2 to 
change the boot sequence to HDD|CD ROM|LAN|Floppy.
Using DMITools
The DMI (Desktop Management Interface) Tool copies BIOS...

34Chapter 2
Example 1: Read DMI Information from Memory
Input: 
dmitools /r 
Output:
Manufacturer (Type1, Offset04h): Acer
Product Name (Type1, Offset05h): TravelMate xxxxx
Serial Number (Type1, Offset07h): 01234567890123456789
UUID String (Type1, Offset08h): xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Asset Tag (Type3, Offset04h): Acer Asstag
Example 2: Write Product Name to EEPROM
Input:
dmitools /wp Acer
Example 3: Write Serial Number to EEPROM
Input:
dmitools /ws 01234567890123456789
Example 4: Write UUID...

Chapter 235 

36Chapter 2 

Chapter 337
Machine Disassembly and Replacement
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
•Philips screwdriver
•Plastic flat screwdriver
•Plastic tweezers
NOTE: The screws for the different components vary in size. During the disassembly process, group the...

38Chapter 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...

Chapter 339
External Module Disassembly Process
IMPORTANT:The outside housing and color may vary from the mass produced model.
External Modules Disassembly Flowchart
The flowchart below gives you a graphic representation on the entire disassembly sequence and instructs you 
on the components that need to be removed during servicing. For example, if you want to remove the 
mainboard, you must first remove the keyboard, then disassemble the inside assembly frame in that order.
Screw List...

40Chapter 3
Removing the Battery Pack
1.Turn computer over. Slide the battery lock in the direction shown.
2.Slide and hold the battery release latch to the release position (1), then lift out the battery pack from the main 
unit (2).
1 2