HP 355 G2 K4K27UT#ABA 15.6-Inch Laptop (AMD A series A8-6410/2 GHz, 4 GB RAM - 500 GB HDD, Windows 7 Pro 64-bit/Windows 8.1 Pro downgrade)(Silver) AMD Quad-Core A8-6410 APU with Radeon R5 Graphics (2 GHz, up to 2.4 GHz, 2 MB cache) 4 GB 1600 MHz DDR3L SDRAM (1 x 4 GB) 500 GB 5400 rpm Hard Drive0 GB Solid-State Drive, DVD+/-RW SuperMulti DL 15.6-Inch diagonal HD anti-glare flat LED-backlit (1366 x 768) AMD Radeon R5 Operating System: Microsoft Windows 7 Professional 64-bit Edition / Windows 8.1 Pro downgrade