Rare longterm feedback... you're welcome.Feedback is on the very specific NUC7i5bnk product AND NOT the seller.Summary and suggestions:I purchased a nuc7i5bnk several years ago direct from Intel. It is a frustrating blue screen terror even after much troubleshooting and tears.Because of the glowing reviews seen in the wild about the more recent models have I have to strongly suggest avoiding purchase of these as used/refit or older model leftovers. Save time and money and simply buy the latest. AND check the reviews. The devs and qa @Intel just might have straightened things out.Tedious Detail:Running Windows 10 professional this little box is  just a Blue Screen Machine. I've been troubleshooting this thing since it came out of the box, and though it has improved slowly the system is still unstable. The initial purpose as a space-saving basic PC for a retirement-age heavy user was a nightmare and I pulled the POS and replaced it with a $300 mid-factor PC that has worked flawlessly since.Investigation: The release i purchased had severely flawed firmware and drivers and over time I applied  updates and firmware refreshes. The uses I've subjected the NUC to since bringing it back from the first deployment are very different and I am an expert at best practices. The Blue Screens continue, albeit a tad rarer.I have done thorough RAM troubleshooting, stress tests and obviously figured in Microsoft OSes' infamously bad behavior  into the factors of this review.I have recently escalated to engaging Samsung's Magician software for performance and troubleshooting assurance. Again best described in long term (unless I find an immediate SSD disk irregularity at which point the review will be remitted/updated.) First step: drive controller firmware update. Scary.In conclusion I AM considering Ubuntu or Redhat but this was initialy purchased as a Microsoft deployment and I prefer to not just run away from issues but to sort them. Linux kernels and their application tend to absorb hardware issues much more readily I've seen.