Hp 15.6" Laptop for Business with Windows 7 Professional 64-bit Os (Intel Core I3 3110m 4gb Memory 500gb HDD DVD Super Multi Burner Hewlett-packard 250 G2) Windows 7 Professional 64 (available through downgrade rights from Windows 8.1 Pro); 15.6" diagonal LED-backlit HD anti-glare (1366 x 768);Intel HD Graphics 4400; 720 HD Webcam 4GB 1600MHz DDR3L SDRAM; 500GB 7200RPM HDD; Bluetooth 4.0; 802.11b/g/n Wireless LAN; 10/100/1000Mbps 2 x USB 3.0; 1 x USB 2.0; 1 x HDMI; 4-cell lithium ion battery