NOW INSTALLED WITH WINDOWS 7 PRO 32-BIT Intel E6300 DUAL CORE Processor ORIGINAL INTEL Motherboard 2GB DDR2 800 Mhz KINGSTON 500 GB SATA 300 Hard Drive 22x DVDR/RW Drive Keyboard/Optical Mouse 2 Piece Black Speaker Set 400W Silver/Black Case< These systems are put through a 24-hour burn-in process and a 34-point quality check before they are shipped. These systems also come standard with a 1-year parts warranty. THIS MAKES A PERFECT VISUALIZATION MACHINE!