HP ProBooks store security credentials in a non-volatile EEPROM or TPM (Trusted Platform Module) chip.
Leave the CMOS battery disconnected for at least 15 to 30 minutes.
Restart the laptop and press repeatedly to enter the BIOS.
This only resets the system time and date. It will not clear the password. hp probook 450 g2 bios password reset
Some HP ProBook units generate a "System Disabled" code after three incorrect password attempts.
To receive support, the user must provide . HP will verify the serial number and the user's identity. If the user can prove they are the legal owner, HP may provide a master password reset (SMC.bin) file. This file is placed on a USB drive; when the laptop boots with the drive inserted, it automatically clears the password.
This method involves generating a master password based on the code produced by your locked laptop. Power on your HP ProBook 450 G2 HP ProBooks store security credentials in a non-volatile
Power down the ProBook and plug the drive into a (avoid the blue USB 3.0 ports for compatibility).
Change the value or clear it entirely according to the utility's syntax guidelines. Save the text file.
On many business-class laptops like the ProBook, removing the CMOS battery often resets the system clock but , as it is stored in non-volatile memory. However, it may reset basic hardware settings. Safety First : Power off and unplug the laptop. This only resets the system time and date
Some regional variants of the HP ProBook 450 G2 motherboard generate a specific lock code after multiple failed password attempts. HP ProBook 450 g2 bios password reset - HP Community
Copy the file to the root directory of the USB drive. Insert the USB drive into the turned-off ProBook 450 G2. Hold down Windows Key + V + Power Button simultaneously.
Unlocking the HP ProBook 450 G2: Methods for BIOS Password Recovery