No, given the early stage of boot at which it crashed, no threading was happening. The randomness was because the initial zeroing out of the kernel's global and static variables might or might not happen, as a result of a physically random process (electrical discharge), instead of being ensured by software.

Most bootloaders (well, a BIOS usually refers to one step before the bootloader, but still) have a pretty primitive command shell, through which you issue the commands telling it how to load the initial kernel (e.g. from storage, or over the network). My guess would be she had to add a line to the boot script that zeroed out the relevant RAM; that, or rewrite the bootloader and add a loop in machine code to zero out the memory.