what is in the registry on computer
The Windows Registry is a hierarchical database that stores low-level settings for the Microsoft Windows operating system and for applications that opt to use the Registry.The kernel, device drivers, services, Security Accounts Manager (SAM), and user interface can all use the Registry. System Restore can back up the Registry and restore it as long as Windows is bootable, or from the Windows Recovery Environment starting with Windows Vista. 2  NTBackup can back up the Registry as part of the System State and restore it. 3  Automated System Recovery in Windows XP can also restore the Registry.