My sincere apologies for my previous panic over lack of a Product Key. In my earlier reviews, I was concerned about the possibility of an illegal copy of Windows, since my copy did not seem to have a Product Key. I sent messages through Amazon, but was told there would be a delay of a "couple of days." I contacted Blue Cloud PCs directly, and got immediate help from Lex. He simply provided my Product Key, which I entered and activated Windows while he stood by and waited to make sure. Great customer support! Blue Cloud PCs just went to the top of my list for PC-related needs.