Solved! External monitor is detected, but shows a black screen

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Nov 10, 2021

I have an Asus ROG gl552vw laptop, which has 2 display adapters:

Intel(R) HD Graphics 530

I tried connecting an external monitor to my laptop, and it works only when Windows is loading (and inside BIOS), but after I reach the login screen, it becomes completely black (even though Windows detects it and my mouse cursor can move to it).

When I disabled the Intel display adapter in Device Manager, the screen is no longer black after a restart, but now Windows doesn't detect the screens as separate monitors, and just shows the same image in both screens (external and internal).
It also sets the screen refresh rate to 1hz (the monitor I got, HP x24ih, supports up to 144hz).
Also when going to safe mode the screen suddenly works.

Is there a solution to this problem? my guess it has something to do with the fact I have 2 display adapters.

I managed to fix this problem by removing the Intel display driver using DDU while on safe mode, and then installing an older version of the display driver from the official Asus website:

also, I turned off auto driver updates in Windows control panel.
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