The most expensive option is to purchase a full retail license for Windows 7. The OEM key will be sent via eMail in 8 hours. Please check the spam or junk mail folder too.
Use of this Win 7 OEM Key is subject to the terms of the Microsoft OEM System Builder License. This software is intended for pre-installation on a new personal computer for resale. This Key requires the assembler to provide end user support for the Windows software and cannot be transferred to another computer once it is installed. To acquire Windows 7 software with support provided by Microsoft please see our full package “Retail” product offerings.
Looking for your product key? The product key is a 25-digit string with a hyphen between each 5 digits. It’s guaranteed to work with any PC, with no installation or licensing complications. The problem is finding this software, which Microsoft stopped selling years ago. It will say “Product Key” before 25 digits or have an image of a key next to 10 digits with the remaining 15 on the next line below. The Product Key is generally located in the lower left corner of the DVD case, on the disc itself, or on a leaflet in the packaging you received.