Try this in order:
- Press Windows logo key + Ctrl + Shift + B to reset the graphics driver.
- If that does not help, restart the PC.
- Check whether Task Manager is also flickering:
- Press Ctrl + Alt + Delete. If Task Manager does not appear, press Ctrl + Shift + Esc.
- If Task Manager flickers too, the problem is probably the display driver.
- If Task Manager does not flicker, but the desktop does, the problem is probably an incompatible app.
If it looks like a display driver problem:
- Open Device Manager from the taskbar search box.
- Expand Display adapters.
- Right-click the display adapter and try one of these:
- Roll Back Driver: Properties > Driver tab > Roll Back Driver > Yes. Then restart the PC.
- Update driver.
- Uninstall Device from the Driver tab, then restart so Windows attempts to reinstall it.
Notes:
- Rolling back or uninstalling a driver requires administrator privileges.
- If Roll Back Driver is unavailable, there is no previous driver version to return to.
- If the uninstall option to remove driver software is missing, starting in safe mode may be needed.
If it looks like an app problem:
- Go to Start > Settings > Apps > Installed Apps.
- Find recently installed or suspicious apps.
- Select the app, then Uninstall > Uninstall.
- Restart the PC and check whether the flashing stops.
- If needed, repeat one app at a time until the issue stops.
If the app came from Microsoft Store, check for app updates first. If it came from somewhere else, check the app maker’s site for updates.
References: