Insert the drive into your locked Acer laptop and restart. Tap F12 during startup to select the USB as your boot device.
Note: If F12 is disabled and you are locked out of the BIOS, you may need to temporarily remove the internal hard drive to force the system to boot from the USB.
Copy the clnpwd.exe file to the root directory of your bootable USB. clnpwd.exe 64 bit download
If you are locked out of your Acer laptop's BIOS, searching for is a common first step toward regaining access. clnpwd.exe is a specialized DOS-based utility primarily used to clear supervisor, user, and HDD passwords on older Acer hardware. What is clnpwd.exe?
Use a tool like Rufus to create a bootable FreeDOS or MS-DOS USB flash drive. Insert the drive into your locked Acer laptop and restart
Because it is a DOS tool, you must create a bootable environment to use it properly:
Once at the DOS prompt (e.g., C:\> ), type clnpwd.exe and press Enter. Select Options: The utility will typically present a menu: Option 1: Clear User Password. Option 2: Clear Supervisor Password. Option 3: Clear HDD Password (on supported models). Safety and Modern Alternatives Copy the clnpwd
The ( clnpwd.exe ) is a legacy tool designed to run in a DOS environment to reset CMOS-stored security features. While users often search for a "64-bit" version, the original utility is a 16-bit DOS executable . This means it cannot run directly inside a modern 64-bit Windows environment like Windows 10 or 11; it must be launched from a bootable DOS drive. How to Use clnpwd.exe