This Computer is Assembled Computer build with as per available Cabinet in Zebronics Brand, power supply, LED Monitor, Keyboard Mouse and other Accessories will be other brand. The PC comes with Trial window Operating System and Microsoft Office. There is no DVD writer in this PC. There is no warranty for software you can claim for only hardware parts, no door-to-door service available, you can use this pc for Office, Online Study, Programming (Note before buying please read warranty policy carefully and read description.)