How to make all programs run as Admin by default in Windows8, Windows 8.1, Windows Server 2012, Windows Server 2012 R2

Run PowerShell as Administrator and paste the following to disable UAC:

Set-ItemProperty -Path "HKLM:\Software\Microsoft\Windows\CurrentVersion\Policies\System" -Name "EnableLUA" -Value "0"
shutdown -r -t 0

The above commands will give you a full control on windows8/8.1/win 2012/win2012 R2 computer.