How To Backup And Restore The Windows Registry


There is no automatic failover to a backup copy of the registry. At boot time, the registry is a single point of failure.

  • A checksum is a string of numbers and letters that act as a fingerprint for a file against which later comparisons can be made to detect errors in the data.
  • A CMOS Checksum error occurs when the computer isn’t able to read that information.
  • If resetting your font settings and clearing your font cache didn’t fix the problem, chances are you a corrupted Windows file .

Disconnect the battery cable from the system board. You may not be able to fix the issue without a complete reinstall.

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If not, try out the other methods listed below. In the Command Prompt window, type CHKDSK and press enter.

  • Now that you understand the meaning of the Windows registry, let’s check out the best methods to backup and restore it.
  • To change a value, double-click it in the right pane and enter the new value.

Outside security, registry keys cannot be deleted or edited due to other causes. Registry keys containing NUL characters cannot be deleted with standard registry editors and require a special utility for deletion, such as RegDelNull. Windows Registry can be edited manually using programs such as RegEdit.exe, although these tools do not expose some of the registry’s metadata such as the last modified date.

Although there is no substitute for a solid backup plan, it’s still a good idea to protect your system by creating a backup of your registry before making any changes to it. Let’s take a look at how you can do that.

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If reseating the CMOS does not fix the issue, it can be that the battery is dead. In this case, replace the CMOS battery with a new one.

The data stored in such registry keys is essential for a smooth execution of these programs. The Microsoft Computer Dictionary defines the registry as a central hierarchical database used in the Microsoft operating systems starting with Microsoft Windows 98. The database stores information that is necessary to configure the system for users, applications and hardware devices. Microsoft introduced the registry back in Windows 3.1, but it was initially used only for certain types of software. In the Windows 3.1 era, Windows applications frequently stored settings in .INI configuration files that were scattered across the OS. The registry can now be used by all programs, and it helps bring together download the settings that would otherwise be scattered in many different locations across the disk.