出现save to cmos and exit y n后按回车或y就没有反应了是怎么回事

出现save to cmos and exit y n后按回车或y就没有反应了是怎么回事 bios里面的SAVE TO CMOS AND EXIT(Y/N)什么意思 SAVE to CMOS and Exit 翻译SAVE TO CMOS AND EXIT Y to save changes and exit or Esc to exit without saving Please Enter cup speed Cmos serup and Remember to save Befor 开机显示 Please Enter CPU speed cmos Setop and Pemember to save please enter cpu ratio cmos setup and remember to save befor save configuration changes and exit nowe? save&exit Exit sustem setup and save your chanes to comos 的翻译 matlab的问题：当我输入>> syms x;>>f=x*x 按回车后就出错,这是怎么回事啊?请大家帮帮