Acer notebook

Ive got an acer notebook that dosent like to turn on it will sometimes and when it dose it normally gose in to hibernation you can then get it to turn back on buy pushing the power buton but I gose back to hibernation after 2mins or less I have tryed dischageing the system I need to get it runnig for a project im doing plz help any help apreciated and thanks in advance also I dont no what verstion it is all I no it was bought new in 2008
 
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