Make reminders show only once
 

Make reminders show only once:

By default, reminders will keep bugging you for 2 minutes. You can change this to zero minutes by adjusting this value:
HKCU\ControlPanel\Notifications\Reminders\AutoSnoo ze\AutoSnoozeMins = 0 (DWORD decimanl)

Note that you can set this to any value you like. Alternative to setting this value to zero is to delete the '?AutoSnooze' key altogether