Screen goes blank after 1 minute

  afield68 15:40 17 Apr 2017
Locked

When using my pc the screen goes blank and the on light goes out(situated on the bottom right) when I move the top screen as if I'm closing the pc the light comes back on, sometimes flickering, and the screen comes back on but only for about 1 minute and these keeps repeating. The battery is fully charged. Thanks

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