Take out the battery from it. The battery is accessed by removing just two screws with a cross head, and pulling its cover off. Disconnect the battery and plug it back in. This will work.
Also try this...
Detach the power adaptor and battery Also remove any external USB devicesHold the ON switch in for 30 secs (dispersing all internal power)Put the power adaptor in ONLY (confirming that the power source is Ok too)Try turning onIf it worksTurn off, and put the battery back inTurn on
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