Check/Set/Change/Clear HP BIOS Password with Powershell

# Check if password is set
Get-WmiObject -Namespace root/hp/InstrumentedBIOS -Class HP_BIOSSetting | Where-Object Name -eq "Setup Password").IsSet


# Set password
(Get-WmiObject -Namespace root/hp/InstrumentedBIOS -Class HP_BIOSSettingInterface).SetBIOSSetting("Setup Password","<utf-16/>" + "NewPassword","<utf-16/>")


# Change password
(Get-WmiObject -Namespace root/hp/InstrumentedBIOS -Class HP_BIOSSettingInterface).SetBIOSSetting("Setup Password","<utf-16/>" + "NewPassword","<utf-16/>" + "OldPassword")


# Clear password
(Get-WmiObject -Namespace root/hp/InstrumentedBIOS -Class HP_BIOSSettingInterface).SetBIOSSetting("Setup Password","<utf-16/>","<utf-16/>" + "OldPassword")