The Registry is a system database where Windows operating system and other software keep their settings. Registry Editor is a program that edits that database.
This is how you start it.
How to start Registry editor:
1. Click “Start”
2. Select “Run”
3. In “Open” box type “regedit” (without quotes)
4. Click “OK” button
It is advisable to backup the registry before editing. More information: [Backing up part of the registry->how-to-backup-part-of-the-registry]
Windows Registry Editor: