4、判断: (A)CMOS Battery State LOW(CMOS电池不足); (B)Keyboard Interface Error(键盘接口错误); (C)Hard disk drive failure(硬盘故障); (D)hard disk not present(硬盘参数错误); (E)Missing operating System(硬盘主引导区被破坏); (F)Non System Disk Or Disk Error(启动系统文件错误); (G)Replace Disk And Press A Key To Re