Thanks. Computer is on a domain, but none of the required privileges is denied from AD.

I also checked folder permission, as stated in doc here: http://msdn.microsoft.com/en-us/library/ms143504%28v=SQL.110%29.aspx

And found that this permissions were missing (for some reason, they were NOT set by the installer):

Instid\MSSQL\Log - Delete

110\com - Read, Execute

110\shared - Read, Execute

110\shared\Errordumps - Read, Write

ServerName\EventLog - Full control - CANNOT FIND THAT FOLDER - DOES NOT EXISTS?

Where that "EventLog" map should be ?