If the first GPU is working fine, we can suspect the problem lies in the second GPU, the operating system, or computer settings.
Look for the current device status of the first graphics card on your PC since we need to rule out driver issues on the motherboard. Restart PC – Image Credits Inspect The Graphics Card It identifies and resolves hardware issues, such as Windows being unable to detect the second graphics card. When Windows fails to detect the second GPU, the first troubleshooting method should be to restart your PC. In addition, find out how to lower GPU temperature with our ultimate guide. We have many ways to resolve the GPU detection error, from restarting your computer to updating its BIOS. How To Fix Windows Not Detecting Second GPU? Therefore, remember these 11 things before buying a motherboard. Besides, compatibility problems between the GPU and the motherboard can also lead to this trouble. Using older versions of Windows and not installing timely updates can hinder its compatibility with two graphics cards. Moreover, it could be possible that the power source is not supplying enough power to use both the GPUs on your computer. In addition, the computer BIOS may not be configured to work with the second GPU, or you may be using outdated BIOS. Various reasons could lead to Windows failing to detect another graphics card, such as a malfunctioning graphics driver. How To Fix Windows Not Detecting Second GPU?.