Summary: First, I want to highly recommend the seller, Tampa-Laptops. My E6400 looked like new, worked as expected, given its 120GB drive and 2GB RAM. It came with Windows 7 Professional, preinstalled without any bloatware. The sticker on the back had the product code, which I have since verified to be valid. The battery was an old, 55WH, but not a dead one. I tested it running as a "stress test" youtube video at full screen with speakers on.
Summary: I apologize for this review taking so long to submit, but I just now started to use my purchased computer. I like the size of it, compact but not as small as a tablet. The wireless feature is so enjoyable that I can use a wireless mouse with it; the wi-fi feature is excellent. This is a basic computer but came loaded with Window's 7 , which is what I wanted-no to Window's 8 for me. It was/is very easy to use.