Dell Inspiron 15.6 Inch Laptop (Intel Quad Core Processor 2.66 GHz, 4 GB DDR3, 500 GB Hard Drive, Windows 8.1) Black (Certified Refurbished) This Certified Refurbished product is manufacturer refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty. Intel Pentium Quad Core N3540 Processor, 2M Cache, up to 2.66 GHz, 4 Threads 15.6 inch LED Backlit Display with Truelife and HD resolution (1366 x 768), HD Webcam 4GB DDR3L SDRAM (1 DIMM) , 500GB 5400RPM hard drive, No DVD Drive, Dell Wireless N1707 with Bluetooth 4.0, 2 x USB 2.0 ports, 1 x HDMI port, 4-in-1 memory card reader Windows 8.1 (64-bit), free upgrade to Window 10