That's correct. The Win 8 product key is embedded in BIOS. You only need the installation media to do a clean install of Win 8 (8.1). But, if your system boots to the desktop, you can run a Reset which will reinstall the factory image. You have to back up personal files on external media first because everything will be lost. If things aren't so serious, you could do a Refresh instead of a Reset. Search Reset on the Charms search bar. If you can't get to the desktop, read this tutorial for doing a clean Win 8.1 install. Either way, you'll need the installation disks and product keys for any other software you installed...
I have an XPS 2720. The warranty expired one week ago. Windows 8, which was shipped with the computer, is corrupted and I need the product key. I cannot find it. I called premium support and they said, "There is no product key, you have to pay for support.".   ? How can I find the product key to MY Windows 8? Thank you.
Product key?