Do not buy a Dell computer. You WILL pay the price. I bought my XPS 9510 just over a year ago. When it is working, I love it. Unfortunately, that does not happen all of the time. I leave the computer plugged in nightly and use it most of the day without the ability to plug it in. It should have about 5-7 hours on battery time. The problem is numerous times I cannot start it. It responds as if it has a dead battery. When I return home and plug it in, it starts right up and usually has 100% battery power left but always at least 70%. I have replaced the battery and even replace the computer but the problem remains. When I contact support they are very quick to respond and attempt to address the problem but after 2 hours of updates on everything, the problem returns in a matter of weeks. Last time I went through this I told them this will be the last time and they said the warranty will continue after the expiration date if this problem persists. Now I call them and stated that the problem is back and I want them to buy back this unreliable computer and their response was that it was out of warranty and can't do it. Horrible customer service. I would never buy or recommend a product from Dell ever again.