Received in good time, clear instructions for set up. After a day, got stuck in a boot loop. Took it apart, reseated the button battery, worked fine for 2 months, now stuck in a boot loop again. I bought this for my parents who are not computer-savvy enough to troubleshoot this on their own, so it's been a headache and a waste of money because I'm not going to insist they pack it up and send it back. Next time I'll buy new.Update (Dec 19): the seller has been very responsive and is working closely with me to find a solution.