Asus X551CA 15.6-Inch Laptop (1.5 GHz Intel Celeron 1007U, 4GB RAM, 500GB HDD, Windows 8) Built-in 1.0MP webcam with microphone / High-speed Wireless LAN 15.6&quot; Display 1366 x 768 HD resolution &amp; Energy-efficient LED backlight. 4GB Memory / 500GB Hard Drive / NO Optical Drive Windows 8 operating system Intel Celeron Processor 1007U