What happens to Windows 7 after the 30 day activation has expired?

What happens to Windows 7 after the 30 day activation has expired?
After the 30 Days Of Activation (Windows 7)


What happens if you don’t Activate Windows?
If you choose not to activate Windows, the operating system will go into what is called Reduced Functional mode. Meaning, certain functionality will be disabled.
Benefits you gain from activating:
- Access to all Windows Updates with confidence that your Windows software has the latest security and reliability enhancements from Microsoft.
- Support for your software, including downloads reserved exclusively for genuine Windows software.
A Windows 7 installation in Reduced functional mode (notice the watermark at the right hand corner).
If you don’t activate your Windows software
- You will be prompted every time you log in to Activate.
- You will receive periodic prompts to activate your software.
- Certain visual experiences will be disabled such as the Windows Aero Glass theme.
- Won't be able to update software such as Microsoft Security Essentials.