When you turn on your mp4 all you see is an hourglass?

If you see only an hourglass when turning on your MP4 player, it may indicate that the device is loading or encountering an error. Try resetting the device by turning it off and on again, or removing and reinserting the battery if applicable. If the problem persists, consider checking for software updates or restoring factory settings. If none of these solutions work, the device might require professional repair.