之所以有这个问题，是因为有一个机器在刷了 BIOS 之后，间歇的出现蓝屏或者其他看似硬件的问题，目前尚未确定是真的硬件问题还是驱动问题抑或是刷 BIOS 造成的，对于这个问题，直接去 google 问题还是比较难找到答案的，但是在这里，http://en.wikipedia.org/wiki/B… ，有提到相关的一些说明：

The BIOS additionally provides an abstraction(抽象) layer for the hardware, i.e. a consistent way for application programs and operating systems to interact with the keyboard, display, and other input/output devices. Variations in the system hardware are hidden by the BIOS from programs that use BIOS services instead of directly accessing the hardware. MS-DOS (PC DOS), which was the dominant PC operating system from the early 1980s until the mid 1990s, relied on BIOS services for disk, keyboard, and text display functions. MS Windows NT, Linux, and other protected mode operating systems in general ignore the abstraction layer provided by the BIOS and do not use it after loading, instead accessing the hardware components directly.

总的来说，就是 DOS 等远古操作系统，在系统跑起来之后，还需要依赖 BIOS，但是 NT，Linux 等现代操作系统，不依赖 BIOS。