Laptop dell wont turn on [Closed]

Kindly help me.. my dell laptop wont turn on for the 2nd times. I always make it sleep mode after settle all my works. It happen when the battery is over when doing works. First time happen, it solved one day after. All tips given in google doesnt help with my laptop. Today is the 2nd time. I dont want its repeat again if im careless. I need to solution even it battery is over when im doing my work.. please.. thanks