I am using a Toshiba Satellite C55-B which is using a Intel Celeron N2840 running on Windows 10 Home. The update utility says that it is upgraded to the latest version. Running CustomModeApp.exe seems to do nothing, non-admin and admin mode.
Thank you for posting on the Intel® communities.
After checking your question in the post, we understand that you would like to set a custom resolution using the Intel® HD Graphics Control Panel.
I need to inform you that the Custom Resolution/Modes feature was removed from the Intel® HD Graphics Control Panel.
You might need to contact your computer manufacturer to see whether you can add support for the Custom Modes/Resolutions feature.
However, some computer manufacturers may not support it.
Please check the following link for more information.
Intel Technical Support Technician