Thanks a bunch runs great, cleaned up the code as well,
#include <MsgBoxConstants.au3>
#RequireAdmin
Reboot()
Func Reboot()
; Asks the user to enter a time in minutes.
Local $Sec = InputBox("SET TIME FOR REBOOT", "IN MINUTES", "")
$Min = 60
$Reboot = $Sec * $Min
$command = ("C:\Windows\System32\shutdown.exe /r /t " & $Reboot)
Run ($command)
EndFunc