From the very beginning I had problems with the computer freezing intermittently, requiring restarts. (Note that I run two monitors one using HDMI and one using display port. Also note that I need this computer for my work.) I contacted the vendor (Kingdel). They insisted that the issue was a software problem and that is should reset the machine and reinstall the Windows 10 OS. Pursuant to their recommendations, I have done that several times. The failures have become more frequent. Finally, after elimination all possible loading factors, it turns out that the HDMI interface is the source of the problem. It fails even with the basic Windows OS running streaming video -- using a single HDMI monitor. When I use the display port as my only monitor, the system does not fail.Now for the really ugly part of my experience. Kingdel insists that I mail the device back to China at my own expense.  If their crackerjack diagnosticians cannot reproduce the failure, I will have pay to have it returned to me. Knowing that KingDel was located in Hong Kong,  I also mistakenly purchased  an "ASURION 2 Year Desktop Computer Protection Plan with Tech Support" only to find out that  support begins at the conclusion of the manufacturer's warranty.So what to do -- I am forced to use the Kingdel as a headless computer (no displays or keyboard) via Windows remote desktop. It works well. After my current work project loading has concluded, I will either send it back to China for service or -- if the manufacturer's warranty has expired I will be able to receive the technical support that I thought I was purchasing in the beginning.Do I feel cheated? Absolutely -- by everyone involved. 1. Amazon, as is typical chooses not to highlight the fine print regarding the manufacturers warranty nor that of the aftermarket warranty service. 2. The Kingdel service is belligerent in the manner in which they interact with their customers.