Dell Core 2 Duo 3.0, New 4 GB RAM, 160GBHD, DVD-RW, Windows 7 Pro-(Certified Reconditioned) Operating System: Windows 7 Professional. New Keyboard and Mouse. New Power Cord,New 4 GB RAM. This certified reconditioned product is tested and certified by the manufacturer or by a third-party seller to look and work like new, with some signs of wear. The reconditioning process includes functionality testing, inspection and repackaging!