Hmm ... that 'buyer beware' phrase comes to mind.  If it doesn't have the license sticker on it, then it is not running a legit operating system.  Even if you do get a valid license key by running Belarc or Magic Jelly Bean, there's no way to know where that key came from. Key is not in the BIOS on Windows 7 (only 8), but Dell installation media checks the BIOS to make sure it is a Dell so it can install and activate, but without a license key sticker, that isn't legit either.
Hi there. I recently bought a second hand ( dell e6410 ) laptop. Operating system was not installed and there is no sticker on the laptop(or under the battery ) concerning windows.  I would like to know if the laptop had a pre-installed operating system, and if so, could I get the license that it came with it? I don't have any recovery DVD, and there also is no Recovery partition. As I read on Internet, it might be that the license key is related somehow to BIOS to keep the license attached to only the computer that it was intended for. Thank you.
Recover Pre-installed Windows 7 License Key