I purchased dell laptop from Amazon. So i got my laptop by delivery. After few weeks, laptop got starting hearing and we I went to dell service. They told me RAM was defective. And there was no warranty as it was not dell's. So i mailed to Amazon but they also refused. Now with my money, I purchased a new one. But, I got to know that the slot was also not working. But they at that time didn't tell me. So, verdict is that I purchased 40k dell laptop from Amazon. And In 8 months, laptop stopped working. And both Amazon and dell are, acc to me, not good companies. Most importantly, Dell.