Users encounter the 'You are not currently using a display attached to an NVIDIA GPU' error while adjusting display settings via NVIDIA control panel.Common reasons behind the error include outdated/incompatible NVIDIA drivers, incorrect port connection, and outdated operating system.To resolve the issue, updating NVIDIA drivers through Device Manager is recommended.Using third-party driver updater tools can also help in updating graphic drivers effectively.Manually installing a compatible NVIDIA driver version is another effective method to tackle the error.Checking and ensuring the display is connected to the correct port on the NVIDIA GPU is crucial in resolving the error.Verifying the GPU usage and confirming the display connection to the NVIDIA GPU is important, especially on dual-display PCs.Updating the operating system, along with security and driver updates, can also resolve the issue for some users.Following these methods can help users fix the 'You are not currently using a display attached to an NVIDIA GPU' error message.Further assistance or sharing the article is encouraged for those needing additional support in resolving the NVIDIA error.