Acer Aspire V3-551G Acer V3-551 and 551G Notebook Service Guide - Page 65

Clearing the Password Check and BIOS Password Clearing the Password Check The password check can be removed by shorting the "RTC_RST" point with a metal instrument. 1. Remove the lower cover door and the memory module (refer to System Utilities on page 2-2). 2. Remove the battery (refer to System Utilities on page 2-2). 3. Under the memory module slots, locate the CMOS jumper. 4. Use an electronic conductivity tool to bridge the two points of the jumper. Figure 2:29. CMOS Jumper Clearing BIOS Passwords To clear the User or Supervisor password, perform the following: 1. At the command prompt, type clnpwd.exe. The Clean Password Utility is shown. d:\Clnpwd>clnpwd ACER Clean Password Utility V 1.00 Press 1or 2 to clean any password shown as below 1.User Password 2.Supervisor Password Clen User Password Successfully! Figure 2:30. Clean BIOS Password 2. Press 1 or 2 to clear the desired password shown on the screen. 3. The screen displays function success or failure. d:\Clnpwd>clnpwd ACER Clean Password Utility V 1.00 Press 1or 2 to clean any password shown as below 1.User Password 2.Supervisor Password Clen User Password Successfully! 1 Clen User Password Successfully! d:\Clnpwd> Figure 2:31. Clean Result 2-23 System Utilities