Sets the initial password for HP BIOS

Set-HPBIOSPassword

##########################
## SET HP BIOS PASSWORD ##
##########################
#region SetBIOSPassword
Write-Output "Setting BIOS password"
# Check if HP BIOS Password is set
Try
{
    $HPBIOSClassExists = Get-CimClass -Namespace ROOT\HP\InstrumentedBIOS -ClassName HP_BIOSSettingInterface -ErrorAction Stop
}
Catch
{
    Write-Output "HP_BIOSSettingInterface WMI class does not exist. No need to set the HP BIOS password."
}
If ($HPBIOSClassExists)
{
    $HPPwdSet = Get-CimInstance -Namespace ROOT\HP\InstrumentedBIOS -Query "Select * from HP_BIOSPassword Where Name='Setup Password' and IsSet=0" -ErrorAction SilentlyContinue
    If ($HPPwdSet)
    {
        Write-Output "HP BIOS Password already set: NO"

        $Base64Pwd = "SABQAF8BHU89KKKBjAAANQAhAA=="
        $Bytes = [System.Convert]::FromBase64String($Base64Pwd)
        $NewPassword = [System.Text.Encoding]::Unicode.GetString($Bytes)
        $CurrentPassword = "<utf-16/>"
        $EncodedPassword = "<utf-16/>$NewPassword"
        $SettingName = "Setup Password"              
        $CimInstance = Get-CimInstance -Namespace ROOT\HP\InstrumentedBIOS -ClassName HP_BIOSSettingInterface       
        $Params = @{
            Name = $SettingName
            Value = $EncodedPassword
            Password = $CurrentPassword
        }       
        $Result = Invoke-CimMethod -InputObject $CimInstance -MethodName SetBIOSSetting -Arguments $params
        Switch ($Result.Return) {
            0 {$ResultDescription = "Success"}
            1 {$ResultDescription = "Not Supported"}
            2 {$ResultDescription = "Unknown Error"}
            3 {$ResultDescription = "Timeout"}
            4 {$ResultDescription = "Failed"}
            5 {$ResultDescription = "Invalid Parameter"}
            6 {$ResultDescription = "Access Denied"}
            32768 {$ResultDescription = "Security Policy is violated"}
            32769 {$ResultDescription = "Security Condition is not met"}
            32770  {$ResultDescription = "Security Configuration"}
            default {$ResultDescription = "Unknown"}
        }
        If ($ResultDescription -ne "Success")
        {
            Write-Error "Failed to set HP BIOS password: $ResultDescription"
        }
        else
        {
            Write-Output "HP BIOS password has been set" 
        }
    }
    Else
    {
        Write-Output "HP BIOS Password is either already set or the instance isn't present in WMI"
    }
}
#endregion