Acer Aspire 7740 Series Service Manual

Also see for Aspire 7740 Series: Quick guide

Contents

Acer Aspire 7740 Series Service Manual Manual pdf 114 page image

108 Chapter 5• If there is no password request, the BIOS Password is cleared. Otherwise, repeat the steps aboveand try again.NOTE: The steps are only for clearing the BIOS password (Supervisor Password and User Password).BIOS Recovery by Crisis DiskBIOS Recovery Boot Block:BIOS Recovery Boot Block is a special block of the BIOS. It is used to boot up the system with minimum BIOSinitialization. Users can enable this feature to restore the BIOS firmware to a successful one once the previousBIOS flashing process failed.BIOS Recovery HotkeyThe system provides a function hotkey: Fn+Esc, for enabling the BIOS Recovery process at system power-onduring BIOS POST. To use this function, the AC adapter and the battery must be connected. If this function isenabled, the system will force the BIOS to enter a special BIOS block called Boot Block.Steps for BIOS Recovery by Crisis DiskBefore doing this, prepare a Crisis Disk (refer to the “Steps for Creating the Crisis Disk in Windows” sectionbelow) and keep it ready in hand.Follow these steps for BIOS recovery:1. Power off the system.2. Connect a removable USB storage device containing the Crisis Disk to a USB port connected to the BIOSflash failed system.3. Under power-off state, press and hold Fn+Esc and then press the power button. The system should bepowered on with the Crisis BIOS Recovery process.4. BIOS Boot Block starts to restore the BIOS code from the Crisis Disk to BIOS ROM on the failed system.5. After the crisis flashing process is finished, the system will restart.After the Crisis Recovery process is finished, the system should have a successful and workable BIOS afterpower on. The user can then update the latest BIOS version for this system using the regular BIOS flashingprocess.Creating the Crisis Disk in WindowsFollow these steps to create the Crisis Disk:1. Prepare a removable USB storage device (size greater than 10MB). Note that all data on the USBstorage device will be cleared during the creation of the Crisis Disk.2. Set up another computer loaded with Windows operating system.