This document applies to HP computers with Windows 7.
The registry is a database in Windows that contains important information about system hardware, installed programs and settings, and profiles of each of the user accounts on the computer. Windows 7 often reads and updates the information in the registry.
Normally, software programs make registry changes automatically. You should not make unnecessary changes to the registry. Changing registry files incorrectly can cause Windows to stop working or make Windows report the wrong information.
Make changes only when they come from trusted sources and always back up the registry before making changes.
caution:An incorrect registry entry can cause serious system problems or prevent the computer from starting. If you must edit the registry to resolve issues, you should always make a backup by following the directions below in Step 1: Backing up the Windows registry. If the registry is damaged due to editing but has not been backed up, the only resolution may be a system recovery.
This document describes how to create a backup of the Windows registry, edit it, and restore it in case something goes wrong.