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Question Black flickering screen


Jun 13, 2012
I have an ASUS PG278Q 1440p monitor running off a GTX 1080 gfx card and everything has been working well for a few years. In the last few days I have started seeing black flickering on the screen (as if the monitor is losing signal very briefly). It tends to come in waves then stabilise for a while and it seems to be completely random as to when it happens.
The behaviour only happens when Windows is loaded and does not affect the monitor OSD so I assume it must be driver related or displayport cable related (today I discovered the cable I am using is not VESA approved).
I have been playing around today and tried completely uninistalling and re-installing gfx drivers, no effect. I have, in the last 5 minutes, found the graphics options to set the monitor refresh rate and reduced this down to 23Hz and have not seen the flickering behaviour yet but obviously this makes Windows less nice to use.
I have purchased a new VESA approved displayport cable and would like some input as to whether people think this will solve the issue and how this could suddenly start to happen after about 2 years of no problems whatsoever.
Apr 23, 2020
Screen flickering in Windows 10 is usually caused by an incompatible app or display driver. To determine whether an app or driver is causing the problem, check to see if Task Manager flickers. Then, based on that information, you'll need to either update the app or the display driver.
Check to see if Task Manager flickers
Open Task Manager by pressing the Ctrl + Shift + Esc keys on the keyboard at the same time. If that doesn't work, right-click the Start button in the lower-left corner of your screen and then select Task Manager.
  • If Task Manager doesn't flicker, an app is probably causing the problem.
  • If Task Manager does flicker, a display driver is probably causing the problem.
Update an incompatible app
Three apps were previously known to cause screen flickering in Windows 10: Norton AV, iCloud, and IDT Audio. In most cases, updating the app or contacting the app manufacturer for an update will fix the problem.

Update your display driver
To update your display driver, you'll need to start your PC in safe mode, uninstall your current display adapter, and then check for driver updates.
  1. Start your PC in safe mode, then right-click the Start button and select Device Manager.
  2. Expand the Display adapters section, right-click the listed adapter, then select Uninstall device. Select the Delete the driver software for this device checkbox, then select Uninstall and restart your PC.
  3. After your PC restarts, press the Windows logo key + I on your keyboard to open Settings. If that doesn't work, select the Start button and then select Settings.
  4. From Settings, select Update & security > Windows Update > Check for updates.



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