This error is known to happen in the event of the following factors:

The Windows registry has been corrupted: The Windows registry can be corrupted for a variety of causes, including virus attacks, power outages, disc write problems, and human errors while manually changing the registry.

Fixing “\WINDOWS\SYSTEM32\CONFIG\SYSTEM is missing or corrupt” on Windows:

Method 1: Restore corrupted registry with Easy Recovery Essentials

The built-in Automated Repair feature in Easy Recovery Essentials can naturally fix a variety of issues like these. EasyRE is currently compatible with Windows XP, Vista, 7, and 8, and can be downloaded and obtained on any computer system.

• Burn the bootable ISO image with extreme caution, as creating a bootable CD might be challenging! You can also generate a bootable EasyRE recovery USB stick or disc.
• Boot up your device with the Easy Recovery Essentials CD or USB previously made.
• When EasyRE is up and running, select "Automated Repair" and click Continue.
• After EasyRE has completed scanning your computer's discs, go to the list and choose the drive letter for your existing Windows installation, then click the Automated Repair option to begin the repair procedure.
• Easy Recovery Essentials will start scanning the selected drive for errors. EasyRE will automatically search the disc, partitions, bootsector, filesystem, bootloader, and registry for errors and TRY to fix them. Because
• EasyRE's repair is automated, no human intervention is required.
• After the process is FINISHED, EasyRE will report its findings. Select the Restart option to reboot your computer and test the modifications.
• As your computer begins to load, the error "WINDOWSSYSTEM32CONFIGSYSTEM is missing or corrupt" must be rectified.

Method 2: Reboot your device into “Last Known Good Configuration”

When a machine is restarted into the "Last Known Good Configuration" state, it uses a VERSION of the Windows registry that was saved from the last time it booted correctly. All registry-related boot issues should be resolved if the last registry backup is accessible and in good form.

The following are the processes for returning a PC to its previous state:

• Start the computer again.
• Before proceeding, wait for the BIOS to complete POST (the screen with the manufacturer's logo and/or system details).
• Continue pressing F8 until you see a range of boot options.
• From the drop-down box, choose "Last Known Good Configuration (Advanced)."
• After pressing Enter, wait for the machine to boot up.

Method 3: Check the disk file system with the CHKDSK utility

Because a malfunctioning registry is typically the origin of the problem, checking and repairing the Windows file system with CHKDSK could be a viable alternative.

Follow these instructions to run CHKDSK from the Windows XP Recovery Console:

• In the drive, insert the Windows XP installation CD.
• Restart the computer and choose the CD drive as the first boot option.
• Press any key to boot from the CD.
• To open Repair Console, click R once the Windows Options menu displays.
• Fill in the Administrator password.
• When the Command Prompt displays, TYPE the following command: chkdsk C: /r
• Press the Enter key.
• Unplug the CD and press the exit key.
• Press the Enter key.
• Restart your computer.

Method 4: Manually restore the registry

The defective registry can also be fixed by replacing it with a fresh copy created while Windows was being installed on the hard drive. This step will restore the system to a state that may differ significantly from its present state; nevertheless, user data will still be accessible. This technique should be avoided if the system has an OEM-installed operating system because the system registry hive upon OEM installations generates passwords and user accounts that did not EVEN exist previously.

To begin, create a backup of all existing registry files, which can be restored if anything goes wrong. The current registry is then deleted and replaced with a fresh one from the C:WindowsRepair folder. After the boot procedure is complete, you have the option of backing up all user data and reinstalling Windows from scratch or specifically restoring the system registry to a more current version supported by System Restore.