After I uninstalled a program, Gnome does not work anymore

[ciaojian]

Hi,I need help!!! plz

apt-get --purge remove libasound2 alsa-utils alsa-oss

after I uninstalled this program which i installed before, and i rebooted the system.

Now I can not use PC with graphics.

Screen Shot 2015-11-09 at 22.38.56.jpg

[anonymous666]

type root as username and password that u mentioned then type startx if it doestnt work then type apt-get install x-window-system after installing this type startx

[ciaojian]

I installed x-window-system then I typed startx.
but I find thisKaliLinux.jpg

[ciaojian]

Finally I resolved the problem!!!!!!!
should to install gdm3,
maybe when i removed libasound2 alsa-utils alsa-oss,it removed also some other packet.
code:
apt-get update
apt-get install gdm3