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Any external monitor I use keeps blinking

Discussion in 'Hardware' started by marianna224, Oct 21, 2018.

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  1. marianna224

    marianna224 Thread Starter

    Joined:
    Oct 21, 2018
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    I have an Inspiron 17 7779 2-in-1 laptop running Windows 10 Pro with an i7 processor and CPU @ 2.70GHz and all the latest updates (video drivers etc)

    Under Device Manger I have two display adapters: a) Intel® HD Graphics 620 and b) NVIDIA GeForce 940MX.

    I have tried two different brand new external monitors to use as a second screen (I use the HDMI port for both). I set them both at a refresh rate of 60Hz and have made sure I always have the most updated drivers.

    No matter what I do however the external monitor will start blinking. It will turn black for a second and then go back as usual. At times the blinking is so frequent that you cannot see anything.

    Tried different HDMI cables (3 to be exact) but no luck.

    I also went into the NVIDIA control panel and from the 3D settings I chose the Integrated Graphics as the Preferred Graphics Processor. (only made an exception for WoW to use the NVIDIA processor)

    I have spent hours upon hours online trying to find a solution but to no avail. Any help will be more than greatly appreciated.
     
  2. lynx1021

    lynx1021

    Joined:
    Jan 7, 2014
    Messages:
    2,343
    Have you tried pushing F8 to switch to external monitor per the manual?
     
  3. marianna224

    marianna224 Thread Starter

    Joined:
    Oct 21, 2018
    Messages:
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    I pressed F8 and chose Extend (because I need both monitors operational) but after about 20 minutes I came accross the same problem
     
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