GPP: Scheduled Task

Any help would be greatly appreciated. I am a beginner System Administrator trying to setup a scheduled task on GPO. Ultimately, I am trying to execute a .exe to install an application at a scheduled time. But first off, I tried testing my scheduled task with the display message function. Please see down below for the steps I took:

• Created an OU
• Placed my computer into the OU
• Opened up the Group Policy Management Console
• Right clicked that OU -> Create a GPO and link it here
• Under Security Filtering added Authenticated Users and Domain Computers
• Linked and enforced the GPO
• Right Click GPO -> Edit
• Computer Configuration -> Preferences -> Control Panel Settings -> Scheduled Tasks
• Right Click Scheduled Tasks -> New Task (Scheduled Task Windows Vista and Later)
• Action: Update, Run only when user is logged on, Run with Highest Prvileges, Configure for Windows 7
• I set the schedule time and action to display a message
• I also enabled loopback processing on the Computer Configuration

Please let me know if you need more information.

Thanks!