Asus Zenbook Extension Display Not Working

JarezJarez Level 1
edited October 2021 in ZenBook
  1. System: Windows 10
  2. Battery or AC: both
  3. Model: UX480FD
  4. Frequency of occurrence: Everytime
  5. Reset OS: No
  6. Screenshot or video: N/A


Detailed description: At some point over the past few months, my extension display has stopped working, I have noticed people with similar problems in the forum, but I haven't seen a solution yet. I have fully updated all my drivers and reinstalled the Asus screen pad utilities and updated all graphics drivers. The screenpad works fine, it is just the extension display, it is recognised properly as a Toshiba display, but it appears as a black screen, when I cast it. I am reluctant to upgrade to screenpad 2.0 as it was noted that it is not mature enough at this stage. Any help would be much appreciated, since it is quite a nice feature and I would like to get it back again.



  • Hello Jarez,

    We would need to sperate your post in to different issue

    1.your toshiba monitor can be recognized, but can not be displayed

    =>how did you connect this external monitor? by HDMI port to...?Any hub or coverter?

    Can I have the complete model name of the monitor and have you tried any other external monitor?

    2.Screenpad 1.0 only work as display extension =>have you ever reinstall your own OS?

    Just for your reference is that Screenpad 2.0 is actually a lot more convenient than the 1.0 and has been developing and used on many new models for more than 2 years.

    Thank you.

  • Hi Blake,

    Sorry for the confusion, the Toshiba display I was talking about is the model of the Screenpad display and appears under that name in devices. My laptop works fine with any display when using the HDMI port. To be clear again, the Screenpad mode in the touchpad fully works, it is just the extension display functionality in the touchpad which does not and appears as a black screen (with the backlight on though).


  • Hello Jarez,

    When you switch to extension display, the screenpad does not display...

    then how about pressing WIN+P and switch in different mode?

    Thank you.

  • Nope nothing either, black screen (backlight on) for all projection options on the touchpad, my issue is similar to: ScreenPad Extension Display Not Functioning — ZenTalk (

  • Hello Jarez,

    When you drag any window down to screenpad under extension display mode, does it shown?

    Thank you.

  • No its just a black screen, backlight on as I said, but doesnt display anything other than the layover for switching between touch and cursor mode.

    In my windows update, optional area it is showing that there is firmware update available (AsusTek firmware, a quick Google shows this is to do with the BIOS? What exactly is this and does it have anything to do with the extension display?

  • Hello Jarez,

    Can you help to update this BIOS?

    It does not directly affect the extension display, but it is updating setting for the system, which might be helpful to put thing back to work.

    Thank you.

This discussion has been closed.