Acer Aspire 4750Z Acer Aspire 4350, 4750, 4750G, 4750Z Service Guide - Page 104

Clearing Password Check and BIOS Recovery This section provides the standard operating procedures for clearing the password and BIOS recovery for Aspire 4750/4750G Series. There is one Hardware Open Gap on the main board for clearing the password check and one Hotkey for enabling BIOS Recovery. Clearing Password Check Hardware Open Gap Description Hardware Gap Default Setting Open (Normal) Operation Description Short (Clearing Password Check) HW Gap position on the main board: Gap name in Aspire Aspire 4750/4750G Series is G2201. G2201 Steps for Clearing BIOS Password Check If the user sets the BIOS Password (Supervisor Password and/or User Password) for a security reason, the BIOS will ask for the password during system POST or when the system enters into the BIOS Setup menu. If it is necessary to bypass the password check, the user needs to short the hardware gap to clear the password by following these steps: • Power off the system, and remove the HDD, AC adapter and battery from the computer. • Open the back cover of the computer and look for the hardware gap on the main board as shown in the picture(s) above. • Use an electric conductivity tool to short the two points of the hardware gap. • Plug in the AC adapter while retaining the short condition on the hardware gap. Press the power button to turn on the computer until the BIOS POST routine is finished. Finally, remove the tool from the hardware gap. • Restart the system. Press the F2 key to enter BIOS Setup menu. • If there is no password request, the BIOS Password is cleared. Otherwise, repeat the steps above and try again. NOTE: The steps are only for clearing the BIOS password (Supervisor Password and User Password). 96 Chapter 5