No display or fans on Dell XPS m1730

I have a xps m1730 and my son turned it on the other day and it has lights but doesnt sound like any fans running. also last few times he used it it started overheating it seemed so we shut it off to cool down now we have nothing
any help would be great the dell website only helped to a point then would not go any farther.
thanks ahead of time
 
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