Hello and welcome, Matteo
Without a log output of or messages error it is hard to say. If you can from terminal run
cat /var/log/messages > log_messages.txt
this will create a the file log_messages.txt in your home folder. You can than copy that info here so we can see if there were any obvious errors thrown.
Just a side note I am using easypeasy
on my netbook and it has been pretty flawless, other than one tweak to the touchpad.