Please press CTRL + ALT + F1 and login. The password will not be displayed. Then type
rm -r /home/(your user name goes here)/.ICEauthority
and press enter.
After that press CTRL + ALT + F7 and login again. You should be able to login again.
What you will be doing is removing the ICEauthority file. In case you are wondering what I am suggesting.
If you want to go gui instead. Just boot up live cd and delete ~/.ICEauthority using file manager.
Here is a shot of mine but I use Icewm and slim in AntiX