Acer Aspire E1-521 Acer Aspire E1-521 Notebook Service Guide - Page 68

Clearing BIOS Passwords To clear the User or Supervisor password, perform the following: 1. In Windows OS, copy the file "CLNPWD.EXE" to the root directory of a DOS-bootable USB disk. Dpqz! Figure 2:42. Copy CLNPWD.EXE file 2. With the target machine on which passwords aer to be cleaned, boot into DOS with the USB disk, and execute CLNPWD.EXE. C:\>CLNPWD.EXE ACER Clean Password Utility V1.00 Press 1 or 2 to clean any password shown as below 1.User Password 2.Supervisor Password Clean User Password Successfully! Figure 2:43. Clean BIOS Password (1 of 3) 3. Press 1 to clean the user password or 2 to clean the supervisor password. C:\>CLNPWD.EXE ACER Clean Password Utility V1.00 Press 1 or 2 to clean any password shown as below 1.User Password 2.Supervisor Password Clean User Password Successfully! 1 Clean User Password Successfully! C:\>_ Figure 2:44. Clean BIOS Password (2 of 3) 2-27 System Utilities