Here are the steps to follow in order to update your operating system: Before performing an update operation, make sure that your Macbook Pro computer does not encounter any charging difficulty. So first make sure you have updated all drivers. Indeed, the fact of not update un pilot graphics card may affect the functionality of the graphics card, and therefore of your Macbook device. It may first be that the problem comes from the software. How to fix the graphics card of a Macbook device? Test your Mac's graphics card using CineBench software If you no longer see an issue after plugging in the second display, then the issue is with your Macbook's display. If so, it means that the graphics card of your device is damaged ou defective. Connect this second display to your Macbook device and see if the problems persist. Plugging in a second display is the easiest way to find problems with your Mac graphics card. In order to identify any possible problem with the graphics card of your Macbook computer, you must first exclude the screen from the maneuver en isolating the displays of the two different components (you have two possibilities: connect a second screen at the computer or change graphics card). The videos may then refuse to be displayed. If black dots, zones to green squares or alternatively flashing lines appear on the écran of your Macbook in 3D view, that the screen jumped upis that be your écran from Mac, be your Graphic card is damaged. How do I know if my graphics card is having problems?

Change graphics card in macbook pro