How to make external monitor the primary display?

What about a dell inspiron 1764? I know the F1 key has some sort of display looking thingy but im not sure what it does since my screen is totaled and my separate monitor still won't display anything... Please help! :sweat:
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  1. Best answer
    if i remember correctly its the function key (Fn) + F4 or F5..
  2. Best answer selected by hoofman25.
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