重装系统显示Minimal BASH-like line editing is supported.

重装系统显示Minimal BASH-like line editing is supported.
重装win7系统了,重启就显示Minimal BASH-like line editing is supported.Fot the first word,TAB..什么的..grub>_我知道是输入命令,但是不管输入什么都不行,键盘就像坏了似的.但实质没坏.按F8也不行放系统重装盘也不行....
改成光盘启动了,确实能进入系统盘的主页面,但是下一个画面依然还是如下:
Booting GRLDR...
Starting cmain( )...
GROB4DOS 0.4.3 2008-05-02,Memory:638/1022M,CodeEnd:0x41B04
[ Minimal BASH-like line editing is supported.Fot the first word,TAB lists possible command completions.Anywhere else TAB lists the possible completions of a device/filename.]
grub>_
依然还是什么键都无法输入..