Acer Aspire S7-391 Acer S7-391 Notebook Service Guide - Page 163

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 Lower Case" procedure described on page 3-7. 3. Perform the "Removing the Battery Pack" procedure described on page 3-8. 4. Perform the "Removing the M-SATA Board" procedure described on page 3-15. 5. Locate the G2201 gap. 6. Use an electrical conductivity tool to short the two contacts on the hardware gap together. 7. 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. 8. Press the button to turn on the computer. 9. After the BIOS POST, remove the tool from the hardware gap. 10. Perform the "Reinstalling the M-SATA Board" procedure described on page 3-60. 11. Perform the "Reinstalling the Battery Pack" procedure described on page 3-67. 12. Perform the "Reinstalling the Lower Case" procedure described on page 3-69. Jumper and Connector Locations 5-5