I have ordered at least 6 of these computers over the last few years and have been happy with the hardware however, there have been a couple of times where the Windows OS software was either not activated or deactivated after a period of time.  Not happy about that however, the Kingdel company has always been responsive to the problem and gotten me the active keys quickly.  Buying as much as our company does from Amazon, one thing I remember is whether or not the seller stands behind their product.  In this case, Kingdel does.