Dell inspiron 3542 has a windows 8.1 operating system.this windows version is a user friendly one that will make youer computing tasks easier an faster.this laptop’s quality and durability is best.it is value for money.this laptop has 5400 rpm sata hard disk and the hard disk capacity is 1 tb.the ram capacity is 4 gb. you can store a large number of multimedia files, documents, images, audio files, video files and software without any worries.its company service and support is best.