If the display still flickers, reenable the Intel GPU and perform the same steps to disable the other GPU. Use the same steps here as for Black Screen issues – if the computer has a dual graphics chipset (Both Integrated and Discrete Graphics), disable integrated graphics by opening Device Manager > expand Display Devices > Right-click the Intel GPU > select Disable device.Boot to Safe Mode with Networking ( How to boot to Safe Mode in Windows 10 ).REFERENCE: Symantec Knowledge Base: My desktop screen flickers after I upgrade my Norton product Task Manager does not flicker > troubleshoot Display Drivers by following these steps: IDT Audio (faulting module IDTNC64.cpl).Uninstall these applications to test if they are the cause (ensure that the reinstallation media is available before uninstalling): The following applications have been reported to contribute to the flickering issues. NOTE: Reinstalling Windows 10 using the Dell OS Recovery Tool may also work even if the System File Check using the sfc /scannow command does not find any issues. After the process is complete, type sfc /scannow and press the Enter key.In the command prompt window, type dism /online /cleanup-image /restorehealth and press the Enter key.Right-click Command Prompt and select Run as administrator.If removing software does not resolve the issue, use these commands to repair Windows:.( Using Event Viewer to Troubleshoot Problems ) These may indicate which application or third-party DLLs are the faulting modules in the Explorer.exe crashes. Search for crash events in the Event Logs in Event Viewer.Use Programs and Features to remove any nonessential applications.
Use Computer Management to open Event Viewer. compmgmt.msc: Opens Computer Management cmd.exe.appwiz.cpl: Opens Programs and Features.Be sure to check the box to run tools as Administrator. Use the File, Run option in Task Manager to open additional tools as-needed.
NOTE: If Task Manager is flickering, or it did not open, try the same steps in Safe Mode ( How to boot to Safe Mode in Windows 10 ).
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