This PC worked fine and suddenly was prompting for windows activation - there was an initial issue I resolved with a reset, and somehow it lost its licence connection. Of course I couldn't get any support from Amazon (return window closed). I left a 1-star stinking review and then did a lot of digging to find the actual vendor. And once they confirmed my Amazon order number they bent over backwards to help me, first providing a new license (didn't work) and then shipping me a replacement computer at no charge. Great communication, amazing service.