How to Burn Discs Using Windows or File Explorer in Windows 7 & 8
Getting Started - How to Start the Disc Burning Process
To get the burning started, you'll need to insert a burnable disc into your drive. Once the disc spins up, Windows will recognize it and ask what you want to do. The AutoPlay prompt looks different in different versions of Windows, but the options provided are similar.
Here's how it looks in Windows 7: