Free registry cleaner

Hi am looking for a free registry cleaner download that really works .Hope I am in the right place.:doh:

CCleaner is the tool most often recommended around here:

As a general rule, the registry in Windows does not require “cleaning”. On occasion, when trying to get rid of video drivers or a particular program that is extremely invasive (cough…Nero and/or Norton…cough), you might want to remove entries from the registry.

You should probably make a system restore point before doing anything intrusive in the registry.

Another one mentioned in comments: - under “check safe only” mode, it is extremely cautious

Many registry cleaners go by the principle that “more is better”, but the more aggressive the cleaning, the more chance that entries that may be needed are removed.