Acer Aspire S3-391 Acer Aspire S3-391 Notebook Service Guide - Page 165

Clearing Password Check and BIOS Recovery 0 This section provides procedures for: Clearing the BIOS passwords Performing a BIOS recovery Clearing the BIOS Passwords 0 To clear a lost BIOS password (user or supervisor password), you need to short the clear password hardware gap (G2201) located on the mainboard. Figure 5-3. G2201 Hardware Gap 1. Shut down the computer and disconnect the AC adapter and all other peripherals from the computer. 2. Perform the "Removing the Middle Cover Assembly" procedure described on page 3-39. 3. Use an electrical conductivity tool to short the two contacts on the hardware gap together. 4. Connect the DC-In cable to the mainboard. 5. 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. 6. Press the button to turn on the computer. 7. After the BIOS POST, remove the tool from the hardware gap. 8. Perform the "Replacing the Thermal Module" procedure described on page 3-53. 9. Perform the "Replacing the Battery Pack" procedure described on page 3-73. 10. Perform the "Replacing the Lower Case" procedure described on page 3-76. 11. Turn on the computer and press F2 during bootup to access the Setup Utility. If no password prompt appears, the BIOS passwords have been cleared. If the prompt appears, repeat steps 4-10 until the BIOS passwords have been cleared. 12. Press F9 to load the system defaults. 13. Press F10 to save the changes you made and close the Setup Utility. Jumper and Connector Locations 5-5