I've got an Intense PC and it has two boot-able OS's on it. When I boot and the multi-boot menu comes up, my mouse and keyboard are not working. So, it always takes me to the default OS.
I've shifted the mouse and keyboard around to various USB ports but the whole thing seems very hit or miss.
In general, why does a BIOS or Multi-boot menu sometimes fail to see these USB devices and what's the cure?