Which of the following is the best practice when installing a new graphics card?

The best practice when installing a new graphics card is to ensure compatibility and installation of drivers beforehand. This step is crucial because it guarantees that the graphics card will function as intended with the existing system.

Compatibility checks involve verifying that the new graphics card is physically compatible with the motherboard’s slot (e.g., PCIe), and that the power supply can provide the necessary power for the card's operation. Additionally, confirming that the operating system supports the graphics card is essential to achieve optimal performance.

Installing drivers in advance, or at least ensuring you have the newest version available, can facilitate a smoother installation process. Drivers act as intermediaries between the hardware and the operating system, ensuring the graphics card can communicate effectively with your system. Without the correct drivers, the card may not function properly, leading to issues such as reduced performance or failure to detect the hardware altogether.

Other practices, like plugging in and powering on immediately, could lead to system instability or failures if the drivers are not properly installed. Checking for firmware updates might be useful but typically is not done before installation, as the priority is to ensure basic compatibility and functionality first. Running a system diagnostic first is generally more relevant for troubleshooting existing issues, rather than necessary for a smooth installation of new hardware.