可能是显卡驱动没装上把。试试把显卡重置为标准显卡试试。
重启电脑进入grub,然后键入e,再 键入e,在最后输入空格 和1,回车,按b以单用户启动linux。 进入命令行,可以输入system-config-display修改显卡 改成vesa. 或者进入/etc/x11下通过vi编辑器编辑xorg.conf文件。 下面是该文件。 # xorg configuration created by system-config-display section "serverlayout" identifier "single head configuration" screen 0 "screen0" 0 0 inputdevice "keyboard0" "corekeyboard" inputdevice "synaptics" "corepointer" endsection section "inputdevice" identifier "keyboard0" driver "kbd" option "xkbmodel" "pc105" option "xkblayout" "us" endsection section "inputdevice" identifier "synaptics" driver "synaptics" option "device" "/dev/input/mice" option "protocol" "auto-dev" option "emulate3buttons" "yes" endsection section "device" identifier "videocard0" driver "via" ends...
centos7 http://www.3322.cc/soft/12676.html