1. A method comprising: calculating, with an auxiliary circuit within a computing device, an integrity verification value for a boot component of the computing device, wherein the boot component comprises program instructions required for execution by a processor of the computing device to place the computing device into an operating mode; determining whether the calculated integrity verification value is associated with an acceptable boot component; and replacing, with the auxiliary circuit of the computing device, the boot component with a copy of a trusted version of the boot component when the integrity verification value is not associated with an acceptable boot component.