Ubuntu 14.04 GUI won't load?

Question

linux

Ubuntu 14.04 GUI won't load, please help!!
The logo hangs and dots run
1) I removed python2.7 using the sudo apt-get purge python2.7 command; sudo apt-get autoremove python2.7
2)After deleting, some files disappeared, the Internet, I decided to restart the PC and now ...
3) When you press any combination of buttons or buttons like f1,f2,f3 ... just a black screen , when pressed again, it is removed

Answer 1

Good evening.
Try to do the reverse operation, install everything back.
if an error occurs during installation, then in the console
sudo apt-get install -f