The Startup folder is hidden by default in Windows 8 and Windows Server 2012.
Open the Windows Run dialog by using the Windows Key + R key combination.
Type %AppData% into the Run field and press enter.
In the AppData folder that is opened, browse down through the following subfolders:
-Microsoft
-Windows
-Start Menu
-Programs
You will find the Startup folder in the Programs folder.
Open a Windows explorer window and type: C:\users\\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup
Open a Windows explorer window and type: C:\ProgramData\Microsoft\Windows\Start Menu\Programs\StartUp