Sony VAIO VGN-NW280F/B 15.5-Inch Black Laptop (Windows 7 Home Premium) 2.13GHz Intel Core 2 Duo P7450 Processor 4GB DDR2 800MHz Memory 400GB Serial ATA 5400RPM Hard Drive, Blu-ray Drive 15.5" (1366x768) Widescreen LCD Display, ATI Mobility Radeon HD 4570 Graphics Windows 7 Home Premium (64-bit)