Richar, as a general rule to enable available devices in a BIOS the first thing to do is enter the BIOS and you should have a menu that states something like set Defaults or Optimal settings - try setting that and see if the devices are available. A second reason that a device is in brackets is that there are NO setting changes available for that device.
Finally - its a good idea to go the Intel's web site and check your board for the latest BIOS - if there is a newer one then run that BIOS per their instructions that come with it - there is usually one type of install that will run in windows - just remember to follow the directions and don't turn off the power
