Remove the PXE boot sequence from a Hyper-V virtual machine.

Remove-HyperVPXEBoot.psm1

Function Remove-HyperVPXEBoot {
    <#
    .Synopsis
        Remove the PXE boot sequence from a Hyper-V virtual machine.

    .PARAMETER ComputerName
        The name of the Hyper-V computer where the targeted VM is hosted.

    .PARAMETER VMName
        The name of the Hyper-V virtual machine to remove PXE boot from.

    .OUTPUTS
        Returns a boolean stating if the operation was successful.

    .EXAMPLE
        Remove-HyperVPXEBoot -ComputerName "HYPERVSRV01" -VMName "WIN2016SRV01"
    #>
    [CmdletBinding()]
	Param(
        [Parameter(Mandatory=$false)]
        [String] $ComputerName = $env:COMPUTERNAME,

        [Parameter(Mandatory=$true)]
        [String] $VMName
    )
    
    Try {
        $oldBootOrder = Get-VMFirmware -VMName "$VMName" -ComputerName "$ComputerName" | Select-Object -ExpandProperty BootOrder
        If ($oldBootOrder -eq $null) {
            Return $false
        }

        $newBootOrder = $oldBootOrder | Where-Object { $_.BootType -ne "Network" }
        If ($newBootOrder -eq $null) {
            Return $false
        }

        Set-VMFirmware -VMName "$VMName" -ComputerName "$ComputerName" -BootOrder $NewBootOrder
        Return $true
    }
    Catch {
        Write-Error $_.Exception.Message
        Return $false
    }
}