How to Fix Glitchy Graphics on an iMac

Glitchy graphics on an iMac computer are often the result of outdated software and display drivers. Software updates are available for free from Apple and include latest bug fixes and display drivers in one package. Fix glitchy graphics on your iMac by downloading and installing the latest iOS software update.

Instructions

1. Open a Web browser and go to support.apple.com/downloads.

2. Click the “Download” button under “Software Update” for the OS you are running.

3. Follow the on-screen prompts to install the update on your iMac.

4. Restart your computer once the software update is complete.