Hey Richard, thanks for replying
A tried what you advised me, but hasn't worked. While trying your solution, I realized the actual one was the same resolution than the one I used to have when the icons where looking properly
The problem began when I booted the notebook a couple of times with no services, trying to work out a terrible delay (using MSCONFIG). Actually startup is working properly , but the small-icons problem persists
Thank yoy again for helping me
Ariel.