Depending on how you bought Windows, there are three main places to look:
If your Windows is currently activated, you can often retrieve the key using a simple script or the Command Prompt (running as Administrator). Why You Need the 64-bit Version product key for windows 7 ultimate 64 bit | FullPCSoftz
If you bought a physical PC with Windows 7 pre-installed, look for a "Certificate of Authenticity" (COA) sticker on the bottom of your laptop or the side of your desktop tower. Depending on how you bought Windows, there are
While the product key itself often works for both 32-bit and 64-bit versions, the is preferred for modern hardware. It allows your system to utilize more than 4GB of RAM, providing a much smoother experience for multitasking and gaming. Avoid "Free" Keys Online Depending on how you bought Windows