Screen flickering on Windows 11 is almost always caused by one of two things: an incompatible application or a display driver issue. The fix depends on which one is causing it — and Windows gives you a quick way to tell the difference.
How to Tell What’s Causing the Flickering
Open Task Manager (Ctrl + Shift + Esc) and watch whether the Task Manager window itself flickers along with everything else.
- Task Manager flickers too — the cause is a display driver issue
- Task Manager stays stable while everything else flickers — an incompatible application is causing it
This test points you straight at the right fix.
Fix 1: Update or Reinstall the Display Driver
If Task Manager flickers (driver issue):
- Right-click Start → Device Manager
- Expand Display adapters
- Right-click your graphics adapter and select Update driver → Search automatically
If that doesn’t find a new driver, go to your GPU manufacturer’s website — Nvidia, AMD, or Intel — and download the latest driver directly. For laptops, use the laptop manufacturer’s driver page instead, as their drivers are optimised for the specific hardware configuration.
If updating makes it worse, you can roll back: right-click the adapter → Properties → Driver tab → Roll Back Driver.
Fix 2: Uninstall the Problem Application
If Task Manager stays stable (app issue), the most common culprits are:
- Norton antivirus
- iCloud for Windows
- IDT Audio
Uninstall recently installed or updated applications one at a time and test after each to identify the one causing the flickering. Go to Settings → Apps → Installed apps to uninstall.
Fix 3: Disable Hardware-Accelerated GPU Scheduling
This Windows 11 feature can cause flickering on some hardware:
- Go to Settings → System → Display → Graphics
- Click Change default graphics settings
- Toggle off Hardware-accelerated GPU scheduling
- Restart your PC
Fix 4: Check Your Refresh Rate
An incorrect refresh rate setting can cause flickering, particularly on external monitors:
- Right-click the desktop and select Display settings
- Scroll down to Advanced display
- Under Choose a refresh rate, select the native refresh rate for your monitor (typically 60Hz, 75Hz, or 144Hz)
Fix 5: Check the Monitor Cable
If you’re using an external monitor, a loose or damaged HDMI or DisplayPort cable can cause flickering. Try:
- Reseating both ends of the cable firmly
- Swapping to a different cable if you have one
- Testing with a different port on the monitor or PC
Fix 6: Disable Automatic Colour Management
- Go to Settings → Accessibility → Visual effects
- Toggle off Transparency effects and Animation effects
Some users report this reduces certain types of display flickering, particularly on laptops.
Fix 7: Perform a Clean Driver Install
If updating the driver didn’t help, a clean install removes all previous driver files before installing fresh:
- Download the latest driver from your GPU manufacturer
- During installation, select Custom installation and tick Clean install (Nvidia) or equivalent on AMD/Intel
