Fix System registry file Missing on startup

 The Windows registry is a database for configuring the operating system and programs. Registry files are very important; Once a file is missing or corrupted, errors start to appear. This post will show you how to deal with a situation where a registry file is missing. Let Techquack help you with your dilemma.

What is a registry file?

The registry, also known as the Windows registry, is actually a hierarchical database of settings, options, information, and other low-level values ​​of software and hardware installed on an operating system (OS). The registry is not a big file, but is made up of a number of separate files called hives (each containing a registry tree). The file can reflect both device configuration and user preferences.

Where are the Windows registry files?

In fact, every time a new application is installed, a new connection is created and stored in the system registry. The settings associated with this application are contained in the file: location, version, size, etc. Typical registry Hive locations:

HKEY_USERS UserProfile
HKEY_LOCAL_MACHINE SAM
HKEY_LOCAL_MACHINE SYSTEM
HKEY_LOCAL_MACHINE SECURITY
HKEY_LOCAL_MACHINE SOFTWARE

Windows provides a registry editor that you can use to make changes to your registry files.

What Causes No Registry File Error in Windows?

We investigated this particular issue by examining various user reports and trying various recovery strategies recommended by other users who may have already been threatening the symptoms of this issue. It turns out that several different scenarios can lead to this issue.

Here is a list of possible culprits that could be responsible for this issue:

Incorrect boot configuration: If you have already set up a dual boot system, you may be using incorrect BCD data when booting. In this case you should be able to solve the problem by booting with the last known correct configuration. Several affected users have confirmed that this procedure works for them.

Corrupt BCD Data: One of the most common causes of this error is an underlying boot issue caused by corrupted BCD data. If this scenario applies, you should be able to fix the problem by using the Bootrec.exe utility to repair corrupted BCD data.

Corrupted system files: It turns out that corrupted system files can also be responsible for this startup error. Some affected users who were also experiencing this problem were able to fix it by running some utilities that can repair corrupted system files (DISM and SFC). In severe cases it may be necessary to restart all operating system components with a repair installation or a clean installation.

How to Fix Missing Registry File Error in Windows?

Restoring a corrupt registry using a third-party program

A major third-party recovery software can fix many such errors automatically with a built-in "Auto Repair" option. A third party program is currently available for Windows XP, Vista, 7 and 8 and can be downloaded and built on any PC.

1. Download a third-party recovery software. Please make sure you have recorded your Windows version (XP, Vista, 7 or 8) before downloading the third party software.
2. burn image. Follow the instructions on how to burn a bootable ISO image very carefully as creating a bootable CD can be a daunting task.
3. Boot your PC from the third-party Recovery Essentials CD you created or from a USB flash drive.
4. After launching the third-party recovery software, select the "Automatic Repair" option and click "Next".
5. After the third-party software scans the disks on your computer, identify and select the drive letter in the Windows installation list, and then click Automatic Repair to begin.
6. The third-party software will start scanning the selected drive for problems. The third-party software scans the disk, partition, boot sector, file system, boot loader, and registry for errors and tries to fix them automatically. No intervention required as the repair of the third-party software is fully automated:
7. Once the process is complete, the third-party software will report its results. Click the "Reboot" button to restart the PC and test the changes.
8. The "WINDOWSSYSTEM32CONFIGSYSTEM is missing or corrupted" error should be resolved when your PC starts to boot.

Restart the PC in Last Known Good Configuration mode

Restarting your PC in "Last Known Good Configuration" mode forces the PC to use the saved version of the Windows registry that was present when the PC was last successfully started. This should fix any registry-related startup errors, assuming the most recent backup of the registry is available and in good condition.

Here are the steps to restore the PC to its previous state:

1. Restart the computer.
2. Wait for the BIOS to fill in the POST (the screen with the manufacturer's logo and/or system information).
3. Press F8 repeatedly until a list of boot options appears.
4. Select "Last Known Good Configuration (Advanced)".
5. Press Enter and wait for the computer to boot up.

Check the hard drive file system using the CHKDSK program.

Since the error is often caused by a corrupted registry, checking and repairing the Windows file system with CHKDSK can be a good solution.

Here are the steps to run CHKDSK using Windows XP Recovery Console:

1. Insert the Windows XP installation CD.
2. Restart your computer and boot from the CD.
3. Press any key to boot from the CD.
4. When the Windows options menu loads, press R to bring up the recovery console.
5. Enter the administrator password.
6. When the command prompt appears, enter the following command
   chkdsk C: /r
   Where C: (without the slash:/) is the letter of your Windows installation disk (usually C:)
7. Press Enter
8. Eject the CD-ROM and press Exit:
   Exit
9. Press Enter
10. Restart your PC

Restore registry manually

A damaged registry can also be restored by replacing it with a clean copy that was created on your hard drive during Windows installation. Note that this procedure will return the system to a state that may be far removed from its current state. However, it should be possible to recover user data in this state. This procedure should also not be used if the computer has an OEM operating system installed, since the registry hive in OEM installations creates passwords and user accounts that did not previously exist. In other words, if these steps are performed on an OEM computer, it may not be possible to reconnect to the recovery console,

First, a backup copy of all current registry files is created so that they can be restored in the event of an error. The existing registry will then be deleted and replaced with a clean copy of the C:WindowsRepair folder.

1.) Insert the Windows XP installation CD and restart your computer.
2.) Press any key to boot from CD.
3.) Press R to bring up the repair console.
4.) Enter the administrator password. When the command prompt appears, type the following commands one by one and press Enter after each command. Replace the C: with the Windows drive letter:

MD-tmp
c:windowssystem32configsoftware copy c:windows-system. bake
c:windowssystem32configsoftware c:windows mp copy software. bake
c:windowssystem32configsam copy c:windows mp sam. bake
c:windowssystem32configsecurity c:copy windows security. copy bake
c:windowssystem32configdefault c:windowsdefault. to bake

Remove
c:windowssystem32configystem Remove c:windowssystem32configystem Remove
c:windowssystem32configsam Remove
c:windowssystem32configsecurity Remove
c:windowssystem32configdefault

copy c: windows para system c: windows system32 config default
c: windows repair software c: windows ystem32 configuration software
copy c: windows c: windows system32 config sam para system
c: copy windows security pairs c: windows system32 configuration security
c: windows -Repair standard c: Windows System32 configuration standard

5.) Enter the exit number and eject the CD:
6.) Exit
7.) Press Enter.
8.) Restart your computer.

After the boot process has completed successfully, you can either back up all user data and reinstall Windows from scratch, or manually restore the system registry to a newer version reserved by System Restore.

frequently asked Questions

How to fix a missing or corrupt registry file?

The error message indicating missing registry files in Windows 10/8/7/XP itself is a three-step solution:

Step 1: Insert the Windows installation disk and restart your computer.
Step 2: Choose language settings and click Next.
Step 3: Click Restore Computer.

What is a registry file?

The Windows registry is a database of information, settings, options, and other values ​​for software and hardware installed on all versions of Microsoft Windows operating systems. Initial files for saving configurations and settings of Windows and Windows programs.

How can I restore a Windows System32 configuration without a CD?

Reset computer to reinstall Windows 10 without CD.
1.) Go to Start-> Settings-> Update and Security-> Restore.
2.) Under the "Reset this PC" option, click "Start".
3.) Select "Delete All" and then "Delete Files and Delete Player".
4.) Finally, click "Reset" to start Windows 10 clean installation.

How to restore RegBack registry?

1. Open the "Windows 10 Settings" window, select "Update & Security", then select the "Recovery" tab on the left and click "Restart now" under "Advanced startup" on the right.
2. After restarting, you will see 3 buttons: Next, Troubleshoot and Shut down computer.
3. Click on the "Advanced Options" button.
4. Click on the command line.