Received my refurbished, certified Dell XPS 15 9500 yesterday.  The packaging was underwhelming to say the least---the components were simply tossed in a cardboard box and overpack with only the most minor attempt to protect them.  It was about half-charged and booted up quickly and silently.  I worked through the initial Windows setup and was just beginning to update drivers when it rebooted without warning.  I figured it might be part of a driver installation but then it happened again.  I let it sit this time, doing nothing.  It rebooted all by itself, never allowing more than 5 minutes between reboots.Contacting Dell proved useless.  They claimed no knowledge of it and walked me through the hardware test outside of Windows---all passed.  They then tried to get me to reinstall Windows on it.Fortunately, I looked up the issue in the meantime.  Unchecking the box triggering automatic reboot upon failure revealed that the screen was freezing.  This seems to be an issue with the two graphics cards.  I followed the recommended fix to turn off panel refresh and other power-saving features for the Intel graphics controller, but it still froze up.By this point, I had invested 4 hours in debugging a brand-new, certified machine and realized I had the service tag memorized.  I had ordered a new adapter so that I could get the Dell image off of my backup drive---which I had sacrificed to do this.  I was preparing to spend another couple of hours setting up the machine all over again, despite the testimony of other customers who had done this to no avail.  Then I looked at the date on these complaints---many going back to June.  Dell's known about this issue for at least six months and done NOTHING to fix it.That was it.  Back in the box, return processed through Amazon, and I will never attempt to buy a Dell computer or a computer through Amazon again.  I'll go to a physical store next time and make them demonstrate it for me.  The build quality is utter crap, the tech support is dishonest, and the whole process is a colossal waste of time and money.  Should Amazon try to charge me anything for the "experience", I will be back here and all over social media slamming them.  Quit selling fraudulent crap.  Anyone who had actually spent 5 minutes testing this machine would have found this issue---they never bothered.