After I uninstalled a program, Gnome does not work anymore

Hi,I need help!!! plz

Code:

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

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

Now I can not use PC with graphics.

Attachment 994

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

I installed x-window-system then I typed startx.
but I find thisAttachment 996

Finally I resolved the problem!!!!!!!:p
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