HP DC7800 Desktop Intel Core 2 Duo 2.0GHz 4GB Ram 500GB Hard Drive Windows Professional Complete Computer Package 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. HP 7800 Core 2 Duo 2.0 GHz Processor What's Inside: 4GB RAM, 500GB Hard Drive, DVD Optical Drive, Operating System: Windows 10 Professional Includes: USB Keyboard and Mouse, Speakers, 19 Inch Monitor (Brand May Vary)