I bought my laptop in an online shop. It was bricked only two hours after I had received it. So immediately I sent an e-mail to demand a new one. Because of I was afraid that they could reject my demand, I lied a little (I still didn't know the Directive 1999/44/CE) . I told them that it was bricked after a Windows 7 update and omitted the part that I had Ubuntu installed. After all, I was sure it wasn't a hardware problem and they could reflash the BIOS to solve it. After four days they told me that the Samsung Series 5 was already discontinued. In that case I demand a full refund of my money that I received after three days.
Now I have a Samsung Series 9 (NP900X3C) and I'm very happy with it.