sailcom is registerd trade mark please donot purchase from others This Computer is Assembled Computer build with as per available Cabinet, power supply, LED Monitor, Keyboard Mouse and other Accessories. The PC comes with Trial version 11 WINDOWS (Have to Contact Local Engineer for Installation) 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 or normalGamming purpose. For warranty if your part is damaged you need to courier for the replacement (Note before buying please read warranty policy carefully)