I would assume there should be a setting in your bios to enable or disable. Need more information on your motherboard.
Do you have a manual for your board if so have a look and it should tell you how to do it.
WPA2 hack: How secure is your Wi-Fi?
Add Depth Of Field to a photo using Tilt Shift Blur in Photoshop
iPhone tips & tricks
Comment afficher des fichiers cachés sur Mac ?