Stuck on "Starting HWActivator * [done] message - login window does not appear

Stuck on "Starting HWActivator * [done] message - login window does not
appear

I cannot login.
If I let the normal boot, after the GRU window, I have the "Starting
HWActivator * [done] message;
If I try the recovery mode I cannot enable internet access and it does not
recognize my username+password if I try ctrl+alt+f1.
If I try boot with a preavious ubuntu version, I have the login window.
Nevertheless, when entering the password, it returns "permission denied".
If I enter a wrong password, the custom message of wrong password appears.
If I try mount the ubuntu partition with a live usb key using
gksudo nautilus
I still in hot water because I still do not having permission to access my
data.
If I try change the permissions with
sudo chmod -R a+rw /media/myCrazyPartitionName
I still having the permission denied message.
I have a windows partition and it works perfectly.
Please, any suggestion?
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I also found this
ubuntu-gets-stuck-in-a-login-loop
but the point is that the system returns the permission denied message
when I try to login using the prompt or any preavious ubuntu version.
Any idea?