I installed Windows Thin PC in a notebook Sony TZ. Everything works perfectly except for the Fn keys that control the settings for volume, brightness and zoom. What happens is the following: if I disable UAC Fn keys work without any problem. With UAC enabled do not work. Another thing that struck me is that if I log into the machine (the laptop has only one account, the administrator) and click on my name the Fn keys work even with UAC being enabled. However, if I restart the note Fn keys no longer work. Observe the problem: logging the Fn keys work. Restarting the note they no longer work. Already formatted the note with other versions of Windows 7 and the Fn function keys with no problems. Can anyone give me any tips to try to resolve this?