Powershell Script to Install a DLL into GAC on Windows Server 2012/ Windows Server 2012 R2 OS when there is no Visual Studio Installed on Web Server

Set-location "DLL Source Path"           

[System.Reflection.Assembly]::Load("System.EnterpriseServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")           

$publish = New-Object System.EnterpriseServices.Internal.Publish           

$publish.GacInstall("DLL Source Path\FileName.dll")           

iisreset

Example for Source Paths:-

            C:\DLLS