That wasn't my problem. I wanted a a hotkey/shortcut to open Evernote when it's minimized in the system tray/notification area.
After researching some hours i've managed to install AutoHotKey and create a script to do so. I don't know if it's coded in the best way, but it works (any improvement is welcome):
;this script opens the evernote helper, clicks the "open Evernote" button and returns the mouse to the previous position.
^!e::
CoordMode, Mouse, Screen
x = 0
y = 0
MouseGetPos, x, y
Send, ^!h
SendMode Event
SetMouseDelay, 0
MouseClick, left, 1206, 80 ; 1206 and 80 are the X and Y coordinates of the "open evernote" button. You should change them to fit yours.
MouseMove, x, y
return
EDIT: the command to run this script is CTRL + ALT + E. Sorry, i forgot to specify it in the description.