When you open my computer are they there?
Goto my comp right click select properies...and go to device manager...see if thy are listed in there. If not have a look in the BIOS to ensure they are enabled! Then run a VIRUS check.
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 ?