Clearing the Supervisor or User Password

If the Password on Boot field have been enabled and you forgot the BIOS password (supervisor/user password), you will not be able to boot up the system. You need to clear the lost password by shorting the hardware gap located near the DIMM slot.

  1. Power off the system.
  2. Unplug the adapter and power cable.
  3. Remove the battery pack. See "Removing the Battery Pack" on page 49.
  4. Remove the lower cover. See "Removing the Lower Cover" on page 50.
  5. If necessary, remove the memory module. See "Removing the DIMM" on page 51.
  6. Locate the hardware gap. The gap is highlighted in the illustration below.
Clear Cmos Motherboard Acer 4315

Hardware gap

Default setting

Operation Description


Open (Normal)

Short to clear supervisor and user password.

  1. Using an electrical conductivity tool, short the two contacts on the hardware gap together.
  2. While resting the tool on the two contacts, plug one end of the AC adapter into the DC-in jack and plug one end to an electrical outlet.
  3. Press the power button to turn on the system.
  4. After BIOS POST message, remove the tool from the hardware gap.
  5. Reinstall the memory modules and lower cover.
  6. Restart the system and press <F2> during the bootup to enter the BIOS setup screen.
  7. Repeat above procedure if the BIOS password is not cleared.

This menu allows you to set the drive priority during system boot-up. The system will attempt to boot from the first device on the list. If the first device is not available, it will continue down the list until it reaches an available device. BIOS setup will display an error message if the drive(s) specified is not bootable.

Information Main

Phoenix TrustedCore(tm) Setup Utility



Boot priority order:

2: IDE1: Optiarc DVD RW AD-7560A-(P

3: PCI LAN: Network Boot

Item Specific Help

Use <t> or <J> to select a device, then press <F6> to move it up the list, or <F5> to move it down the list. Press <Esc> to escape the menu.

Select Item Select Menu

Change Values Select ►Sub-Menu snu ft^M

Setup Defaults Save and Exit

Phoenix TrustedCore(tm) Setup Utility

Information Main

Exit Saving Changes

Exit Discarding Changes Load Setup Defaults Discard Changes Save Changes

Phoenix Trustedcore Cmos Battery

Exit System Setup and save your changes to CMOS.

Setup Defaults Save and Exit



Exit Saving Changes

Save changes made and close the BIOS setup.

Exit Discarding Changes

Discards changes made and close the BIOS setup.

Load Setup Defaults

Loads the default settings for all BIOS setup parameters. Setup Defaults are quite demanding in terms of resources consumption. If you are using low-speed memory chips or other kinds of low-performance components and you choose to load these settings, the system might not function properly.

Discard Changes

Discards all changes made in the BIOS setup.

Save Changes

Saves changes made in the BIOS setup.

If BIOS flash procedure fails in your system, perform a BIOS recovery procedure by using the crisis recovery diskette. During this procedure, the system will force BIOS to load and execute a special BIOS block (also called boot block) to restore the BIOS code from the crisis recovery diskette.

Note the following when restoring the BIOS settings:

□ Use the <Fn> + <Esc> hotkey to enable BIOS recovery during BIOS POST

Important: When using the <Fn> + <Esc> hotkey to enable BIOS recovery, we strongly recommend the following:

  • Make sure the battery pack is installed to the system.
  • Make sure the adapter is connected to the system and plugged into a wall outlet.
  • A crisis recovery diskette should be prepared in Windows XP/Vista.

Perform the following procedure to restore BIOS:

  1. Power off the system.
  2. Connect a USB floppy drive to the system.
  3. Insert the Crisis Disk to the floppy drive.
  4. Press and hold <Fn> + <Esc> keys, then press the power button.

The system initializes the BIOS recovery process. The boot block BIOS starts to restore the failed BIOS code from the crisis recovery diskette. Once the process is completed, the system will restart.

After a successful BIOS recovery procedure. RD/CSD can update the BIOS by regular BIOS flashing procedure.

Was this article helpful?

0 0
The Ultimate Computer Repair Guide

The Ultimate Computer Repair Guide

Read how to maintain and repair any desktop and laptop computer. This Ebook has articles with photos and videos that show detailed step by step pc repair and maintenance procedures. There are many links to online videos that explain how you can build, maintain, speed up, clean, and repair your computer yourself. Put the money that you were going to pay the PC Tech in your own pocket.

Get My Free Ebook


Post a comment