Display black during boot How do I get into bios

My laptop has no boot up screen or any picture at all but I can hear it booting up How do I fix?
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  1. Best answer

    Do you have a spare LCD screen you can connect the laptop to ?

    This is to see if you have accidently diverted video to external screen only

    usually Fn + another key reverses this

    Alternatively back light for LCD screen has failed


    Mike Barnes
  2. i will try!
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