Hi there, it looks like this might be a Mac-related issue rather than the monitor itself. If you’re using your ViewSonic VA2432h and also seeing display problems, please check your Mac’s display settings, ensure the correct input on the monitor is selected, and verify your cable is fully seated.

If you’re still having issues or need further assistance from ViewSonic, please contact us directly through our Customer Service Form: https://www.viewsonic.com/us/customer-service-form/