Operating System: MS Windows 7 Home Premium 64-bit CPU:AMD Athlon II X2 250 Regor 45nm Technology Ram: 4.00 GB Dual-Channel DDR2 @ 401MHz (6-6-6-18) Motherboard: Emachines MCP61PM-GM (CPU 1) Graphics: HP S2031 (1600x900@60Hz) 256MB GeForce 6150SE nForce 430 (Acer Incorporated [ALI]) Hard Drives: 625GB Western Digital WDC WD64 00AAKS-22A7B SCSI Disk Device Optical Drivers:HL-DT-ST DVDRAM GH41N SCSI CdRom Device (ATA) Audio: Realtek High Definition Audio