Volume is very soft

>> Using NetDCU14 sound is not as loud as using NetDCU8/10.
<< Resolution:
HKLM/Drivers/Builtin/NetDCU14/MasterOutVol=dword:0xffffffff
HKLM/Drivers/Builtin/NetDCU14/HaedphoneVol=dword:0xffffffff
OR
Control Panel->F&S Audio Mixer … -> do your adjustments -> reg save.

>> This does not work for key clicks and screen tabs
<< There exists a separat value for this feature, refer http://msdn.microsoft.com/en-us/library/ms940081.aspx (HKEY_CURRENT_USER\ControlPanel\Volume\volume=dword:0xffffffff).