My laptop arrived as promised timewise, and started up just fine. I tried entering the product code to activate it, and the code didn't work. I finished the startup and tried activating it again, to no avail. I contacted the seller, and he told me to be sure to update windows completely and try it again. It took some time for the updates to all go through, as there were many and it just took some time. That being said, leave it plugged in and put your power settings so that it does not go to sleep at all when plugged in, to help it along. But, once all were applied and Windows was as up-to-date as possible, the activation worked fine. The seller was quick to respond, and the computer works fine for my purposes, so feel confident in the purchase and just be sure you update Windows first!