Compaq Presario CQ61-420US 15.6-Inch Laptop (Black) AMD Athlon II Dual-Core Processor for Notebook PCs M320 (2.1 GHz, 1 MB L2 Cache) 3GB DDR2 System Memory (2 DIMM) (expandable to 4 GB) 250GB (7200RPM) Hard Drive (SATA), LightScribe SuperMulti 8X DVDR/RW with Double Layer Support Genuine Windows 7 Home Premium 64-bit, * Up to 4.25 Hours of Battery Life 15.6" Diagonal High-Definition HP BrightView Widescreen Display (1366x768) ATI Mobility Radeon HD 4200 Graphics with 128MB Display Cache Memory with up to 1534MB total graphics memory