Acer Aspire S5-391 Acer S5-391 Notebook Service Guide - Page 56

HDD/BIOS Password This section provides details about unlocking HDD password and removing the BIOS passwords. Unlocking the HDD NOTE: If the HDD password is incorrectly entered three times, the HDD is locked and the Harddisk Security dialog box appears. Figure 2-24. Password Error Status Perform the following to unlock the HDD: 1. On the Harddisk Security dialog (Figure 2-24), press Enter to continue. The Select Item dialog box appears. Figure 2-25. Select Item 2. Use the ↑ and ↓ keys to highlight Enter Unlock Password and press Enter. The Enter Unlock Password dialog box appears. Figure 2-26. Enter Unlock Password 3. Take note of the generated key code. In Figure 2-26 example, the key code is 54986933. NOTE: A separate computer is required to generate the unlock password. 4. On the separate computer, boot to DOS. 5. Execute UnlockHD.exe to generate an unlock password. Use the following command: UnlockHD [key code] with the code noted in step 3, Figure 2-26. For example: Unlock HD 54986933 Password: 41684315