Dont buy Dell XPS 14Z Ultrabook, very bad computer and poor customer services

Dell XPS 14Z-ultra book.Just brought it for a week, than the hard disk crash, after waiting for a week, Dell came and replaced the hard disk. After a week, the computer keep shut-down by itself. Then, I cant use the computer if I don't connect to power supply. When I called Dell, the keep saying waiting for spare part. Now, I just keep waiting, waiting, waiting...............................very poor customer service and very expensive poor bad laptop. 
just put the video on you tube for info
http://www.youtube.com/watch?v=ayz8TO0aZas&feature=youtu.be