From what I understand, CPU drivers like that are commonly used to just handle a lot of ACPI stuff like the newer power settings and dynamic overclocking stuff that's built into CPUs nowadays. There's nothing really critical for them as anything of necessity is built into Windows kernel to begin with.
I have to admit that 0x101 bugchecks are probably one of the nastiest buggers to analyze because they often end up with a lot of missing data which needs to be reconstructed manually, and/or having to deal with analyzing interprocess communications.
