Acer Aspire 4935 Service Guide

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Exit
The Exit screen allows you to save or discard any changes you made and quit the BIOS 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 
ChangesExit 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 Setup Data to CMOS.
             Ins y deH20 Setup Utility Rev 3.5
Information     Main     A dvanc ed Sec urity Power BootExit
Item Spec ific  Help
E x it S aving Changes
E x it Dis c arding Changes Ex it Sy s tem Setup and 
Load S etup Defaults s ave y our c hanges  to
Dis c ard Changes CMOS.
S ave Changes
F1 Help           
↑↓ Select Item           F5/F6 Change Values            F9 Setup Default
ESC Exit         
←→ S elec t Menu       Enter Select
XSubMenu    F10 Save and Ex it 
						

							42Chapter 2
BIOS Flash Utilities
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 Phlash utility to update the system BIOS flash ROM.
NOTE: If you do not have a crisis recovery diskette at hand, then you should create a Crisis Recovery 
Diskette before you use the Phlash utility.
NOTE: Do not install memory-related drivers (XMS, EMS, DPMI) when you use the Phlash.
NOTE: Please use the AC adaptor power supply when you run the Phlash utility. If the battery pack does not 
contain enough power to finish BIOS flash, you may not boot the system because the BIOS is not 
completely loaded. 
Fellow the steps below to run the Phlash.
1.Prepare a bootable diskette.
2.Copy the flash utilities to the bootable diskette.
3.Then boot the system from the bootable diskette. The flash utility has auto-execution function. 
						

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DOS Flash Utility
Perform the following steps to use the DOS Flash Utility:
1.Press F2 during boot to enter the Setup Menu.
2.Select Boot Menu to modify the boot priority order, for example, if using USB HDD to Update BIOS, move 
USB HDD to position 1.
3.Execute the IFLASH.BAT batch file to update BIOS.
The flash process begins as shown.
             InsydeH20 Setup Utility Rev 3.5
Information     Main     Advanc ed S ec urity P owerBootExit
Item Spec ific  Help
B oot priority  order:Us e <
↑> or <
↓> to select
a devic e, then pres s
1. IDE0 : ST9160310AS< F5>  to move it down the
2. IDE1 : Slimty pe DV D A DS8A 2S lis t, or < F6>  to move 
3. USB  FFD :  it up the lis t. Pres s
4. Network  B oot : A theros  Boot A gent < Es c >  to es c ape the menu
5. US B  HDD : 
6. US B  CDROM  :
F1 Help           
↑↓ Select Item           F5/F6 Change V alues             F9 Setup Default
ESC Exit         
←→ Select Menu       Enter Select
XS ubMenu     F10 Save and Ex it 
						

							44Chapter 2
4.In flash BIOS, the message Please do not remove AC Power Source displays.
NOTE: If the AC power is not connected, the following message displays.
Plug in the AC power to continue.
5.Flash is complete when the message Flash programming complete displays. 
WinFlash Utility
Perform the following steps to use the WinFlash Utility:
1.Double click the WinFlash executable.
2.Click OK to begin the update. A progress screen displays.
3.When the process is complete, close all programs and applications and reboot the system. 
						

							Chapter 245
Remove HDD/BIOS Password Utilities
This section provide you with removing HDD/BIOS method:
Remove HDD Password:
When the user keys in the wrong password three times, the system reports the following error code to user.
To unlock the HDD password, perform the following steps:
1.Press Enter to display the Select Item screen.
2.Select Enter Unlock Password and press Enter.
An Unlock Password displays.
3.Make a note of the key, 76943488 in the example.
4.Boot up the system and open a DOS prompt.
5.Enter the UnlockHD.EXE command and input the key to create an unlock code. Make a note of the 
result, for example 46548274.
6.Reboot and enter the BIOS by pressing F2 when prompted.
7.Go to the Security menu and select Set Hdd Password (see “Security” on page 35).
8.Enter the unlock code generated by UnlockHD.EXE as the current password, 46548274 in the example, 
and complete the New Password and Confirm fields to create a new HDD password.
9.Save and exit the BIOS to complete the process. 
						

							46Chapter 2
Removing BIOS Passwords:
If you key in the wrong Supervisor Password three times, System Disabled displays on the screen. See the 
image below.
To reset the BIOS password, run BIOS_PW.EXE as follows:
1.
Key in bios_pw 14452 0
2.Select one string from the list. 
						

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3.Reboot the system and key in the selected string (qjjg9vy, 07yqmjd etc.) for the BIOS user 
password.
Cleaning BIOS Passwords
To clear the password, 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. 
						

							48Chapter 2
Miscellaneous Utilities
Using Boot Sequence Selector
Boot Sequence Selector allows the boot order to be changes 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 information to eeprom to be used in the DMI pool 
for hardware management. 
When the BIOS displays Verifying DMI pool data it is checking the table correlates with the hardware before 
sending to the operating system (Windows, etc.).
To update the DMI Pool, perform the following steps:
1.Enter into DOS.
2.Execute dmitools. The following messages show dmitools usage:
•    dmitools /r ==> Read dmi string from memory
•    dmitools /wm xxxx ==> Write manufacturer name to EEPROM (max. 16 characters)
•    dmitools /wp xxxx ==> Write product name to EEPROM (max. 16 characters)
•    dmitools /ws xxxx ==> Write serial number to EEPROM (max. 22 characters)
•    dmitools /wu xxxx ==> Write uuid to EEPROM (Ignore String)
•    dmitools /wa xxxx ==> Write asset tag to EEPROM (max. 32 characters)
NOTE: The following write examples (2 to 5) require a system reboot to take effect
Example 1: Read DMI Information from Memory
Input: 
dmitools /r 
Output:
Manufacturer (Type1, Offset04h): Acer
Product Name (Type1, Offset05h): eMachines xxxxx
Serial Number (Type1, Offset07h): 01234567890123456789
UUID String (Type1, Offset08h): xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
Asset Tag (Type3, Offset04h): Acer Asstag 
						

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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 to EEPROM
Input:
dmitools /wu
Example 5: Write Asset Tag to EEPROM
Input:
dmitools /wa Acer Asstag 
						

							50Chapter 2