Ensure the "CSM" (Compatibility Support Module) is disabled in the Boot menu to allow the BIOS to see UEFI-based NVMe bootloaders. Conclusion
Navigation is handled entirely by your keyboard. You will use the arrow keys to move between menus, Enter to select options, and Escape to go back. Most versions of this board use the Delete key or F2 to enter the BIOS setup during the initial boot splash screen. Key Features and Common Settings machinist x99 mr9a pro bios
The Machinist X99 MR9A Pro typically ships with a standard American Megatrends (AMI) BIOS. Unlike ASUS or MSI, you won't find a flashy "EZ Mode" with high-definition graphics. It is a classic, text-based interface that prioritizes function over form. Ensure the "CSM" (Compatibility Support Module) is disabled