So basically I bought a ASUS Core i5 laptop online from someone. I clearly am a beginner at this because I didn't realize until I got home that the Windows 10 that was downloaded onto laptop was not "activated". I messaged the person I bought it from & asked if they had the "product key" in order to activate the Windows 10 onto the laptop, he claimed he downloaded the Windows 10 with a disk & that he never had to put a product key in before. I even tried to go onto Microsoft & order the Windows 10 properly but it won't go through. I'm so frustrated & I'm not sure what else I can do at this point If anyone has any suggestions, comments, or questions please reply! Thanks!