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HP Probook 4540s - not connecting to Projetor or Duplicating screen

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  • 11-10-2018 10:11am
    #1
    Speedsie
    Registered Users Posts: 1,316 ✭✭✭
    ¡arriba, arriba! ¡andale, andale!


    Hi,


    I posted this yesterday in Laptops, but might get more traction here.



    I recently rebuilt my Probook 4540s Win7 64bit, installed new chipset and drivers from the HP site. It has an Intel HD Graphics 4000 card

    Apart from one, crucial, aspect - I can no longer duplicate my screen over to another device. I've tried with a Hitachi Projector and a HP monitor. But no luck.

    In device manager, there are a couple of Base System Devices and an Unknown device - see screenshot - which I can't figure out so haven't been able to locate drivers.

    btw - when I plug in the monitor, it does show up in 'Devices and Printers' as functioning well.

    Any advice very gratefully received!


    Speeds



    https://www.boards.ie/vbulletin/attachment.php?attachmentid=463459&d=1539185069


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