A popular, free personal video recorder for Windows.

If you lost your code or bought a tuner second-hand without one, you can purchase a standalone activation code directly from the Hauppauge Webstore. It is typically priced around $10–$15, which is a small price to pay for a secure, virus-free installation and full technical support. 4. Use Free Alternatives (SDR & PVR)

If you don't want to pay for the WinTV interface, your Hauppauge hardware is often compatible with free, open-source software that doesn't require an activation code: