Pre-validation of bootloader certificates for firmware bootloaders of an operating system boot list during a setup mode of BIOS boot initiation provides the end user with a tool to address boot certification problems associated with the firmware bootloaders before the operating system boot precludes execution of bootloaders that lack a valid certificate. For example, re-configuration of a boot list to address certification problems before exit of boot setup prevents boot to an inoperative state caused by lack of firmware execution during boot due to a failed certificate, such as a failure to load an unsigned option ROM.