Sony PCV-RX450 - Manual (Page 67)

Using Support Central
69
Support Central has a tracking feature that stores the issues you are currently
working on.
✍
Support Central retains your registration information, so you are only required to
register once. If you log on to your computer with a different user name or have
recovered your system using the System Recovery CDs, Support Central may require
you to register again.
Support Central: Registration window