win original installation

Hi everyone! So I'm about to purchase this HP laptop, here are the specifications: HP 15-R204NS (L3R85EA) Processor: Intel Core i7-5500U (2,4 Ghz / TDP 15 W. / 4 Mb. Caché L3) Memory: 4 Gb. DDR3L a 1600 Mhz. (Ampliable a 16 Gb.) Storage: HDD 1 Tb. a 5400 rpm. Intel HD Graphics OS...