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PHASE1 INITIALIZATION FAILED error in Windows 10

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3. Run the BSOD Troubleshooter 

  1. Go to the Settings app and
  2. Navigate to the Update & Security section.
  3. Select Troubleshoot from the menu on the left.
  4. Select BSOD from the right pane and click Run the troubleshooter.
  5. Follow the instructions on the screen to complete the troubleshooter.

Now, we’re going to try Windows 10’s built-in troubleshooting tool. This tool can resolve basically any system-related problem you can think of, including the Windows 10 error, PHASE1 INITIALIZATION FAILED.


4. Run the SFC scan

  1. Go to Search, type cmd, and open Command Prompt as Administrator. 
  2. Enter the following line and press Enter: sfc/scannow
  3. Wait until the process is done (it may take a while).
  4. Now, close the Command Prompt and restart your computer.

The SFC scan is another troubleshooting tool we’re going to try here. You can run the SFC scan from the command line, and it also scans your computer for potential flaws and resolves them (if possible).


Get rid of the BSoD issue easier than ever with these quick fixes for Black Screen of Death on Windows 10


5. Run DISM

5.1. Standard way

  1. Right-click Start and open Command Prompt (Admin).
  2. Paste the following command and press Enter:
    • DISM /Online /Cleanup-Image /RestoreHealth
  3. Wait until the scan is finished.
  4. Restart your computer and try updating again.

And the third tool we’re going to run is DISM. Deployment Image Servicing and Management is a tool that reloads the system image, which tends to resolve potential issues.

So, it might be helpful when resolving the PHASE1 INITIALIZATION FAILED error, as well.

5.2. With the Windows installation media

troubleshoot critical drivers
  1. Insert your Windows installation media.
  2. Right-click the Start menu and, from the menu, choose the Command Prompt (Admin).
  3. In the command line, type the following commands and press Enter after each:
    • dism /online /cleanup-image /scanhealth
    • dism /online /cleanup-image /restorehealth
  4. Now, type the following command and press Enter:
    • DISM /Online /Cleanup-Image /RestoreHealth /source:WIM:X:SourcesInstall.wim:1 /LimitAccess
  5. Make sure to change an X value with the letter of the mounted drive with Windows 10 installation.
  6. After the procedure is finished, restart your computer.

6. Check the hard drive

  1. Enter the Advanced Startup (Restart your computer while holding the Shift key).
  2. Choose Troubleshoot, select Advanced Options.
  3. Select Command Prompt from the list of options.
  4. When Command Prompt appears, enter the following lines and press Enter after each line in order to run it:
    • bootrec.exe /rebuildbcd
    • bootrec.exe /fixmbr
    • bootrec.exe /fixboot
  5. Some users are also suggesting that you need to run additional chkdsk commands as well. To perform these commands, you need to know drive letters for all your hard drive partitions. In Command Prompt you should enter the following (but remember to use the letters that match your hard drive partitions on your PC):
  6. Restart your computer and check if the issue is resolved.

If there’s a problem with your hard drive or partitions, BSOD errors are quite possible. So, we’re going to run a test to see if everything is in its place.


7. Copy Catroot, Catroot2 and CodeIntegrity folders from a working PC

According to the users, PHASE1 INITIALIZATION FAILED BSoD error sometimes appears due to corrupted Catroot, Catroot2, and CodeIntegrity folders.

In order to fix this issue, users are suggesting copying these folders from a working computer and replace them. Before copying these files, make sure that both versions of Windows 10 are identical.

For example, if you’re using a 32-bit version of Windows 10, make sure to copy these folders from another computer that runs a 32-bit version of Windows 10.


8. Temporarily uninstall your antivirus software

In many cases your antivirus can be responsible for the stop code PHASE1 INITIALIZATION FAILED error and in order to fix it it’s advised that you remove your antivirus software completely.

Removing your antivirus software is relatively simple, but to remove antivirus software completely including all the remaining files and registry keys it’s advised to use dedicated uninstaller tools.

Many antivirus companies offer these tools, and you can download them for free. If uninstalling your antivirus fixes this problem, you can install the latest version of your current antivirus software.

We also strongly advise you to use a high-quality dedicated tool for fixing this type of error. See what apps we’re recommending, in this article on the best software for fixing BSOD errors.


9. Check for problematic software

In some cases, your software can cause this error to appear, especially if you use VPN tools or any similar programs.

If you recently installed or updated certain software, uninstall that software in order to fix this Blue Screen of Death problem.

One of the most efficient methods that allow you to find out what exactly what program is causing the Blue Screen of Death error is to access the BSoD file log location.


10. Repair your PC with a professional tool

One of the best solutions for fixing phase initialization failed error is to restore your PC to a previous health state with an advanced tool that can also repair damaged files and keep you safe from malware.

Restoro repair

Restoro is powered by an online database that features the latest functional system files for Windows 10 PCs, allowing you to easily replace any elements that can cause a BSoD error.

This software can also help you by creating a restore point before starting the repairs, enabling you to easily restore the previous version of your system if something goes wrong.

This is how you can fix registry errors using Restoro:

  1. Download and install Restoro.
  2. Launch the application.
  3. Wait for the software to identify stability issues and possible corrupted files.
  4. Press Start Repair.
  5. Restart your PC for all the changes to take effect.

As soon as the fixing process is completed, your PC should work without problems, and you will not have to worry about BSoD errors or slow response times ever again.

Get Restoro

Disclaimer: This program needs to be upgraded from the free version in order to perform some specific actions.


11. Perform System Restore or reset your PC

  1. Start the Automatic Repair process by restarting your computer while it boots. (You might have to repeat this step a few times before you access Automatic Repair options.)
  2. Choose Troubleshoot, select Advanced Options, click System Restore.
  3. Choose the restore point and follow the instructions.

If the problem is caused by problematic software or a driver, you can fix the PHASE1 INITIALIZATION FAILED BSoD error by performing a System Restore.

  1. Start Automatic Repair.
  2. Choose Troubleshoot then Reset your PC.
  3. Select Remove everything, choose Only the drive where Windows 10 is installed.
  4. Follow the process and wait for Windows 10 to install again.

If the System Restore didn’t fix the problem, you need to reset your PC. Before we start, we urge you to back up all your important files since this process will remove all files and folders from your C drive.

By performing this process you successfully deleted all files and folders from drive C thus removing any potential software problems.

If the error PHASE1 INITIALIZATION FAILED still appears, it’s most likely that it’s being caused by a hardware problem.

See what are the most common factors that generate the Blue Screen of Death errors in this excellent article that explores all the causes for the BSoD on your Windows 10.


12. Check your hardware

If you recently installed any new hardware, make sure to replace it or remove it since it might not be fully compatible with your PC.

If no new hardware is installed, make sure to check your hard drive and RAM since they are the most likely causes of PHASE1 INITIALIZATION FAILED error.

To check your RAM you can use tools such as MemTest86+, just make sure to keep the tool running for a couple of hours in order to perform a thorough scan.

If your RAM is working properly, the error is probably caused by another component.

Users reported that your hard drive can also cause this error, so make sure to replace it.


PHASE1 INITIALIZATION FAILED error can be problematic, especially if it’s caused by faulty hardware. We hope that some of our solutions were helpful to you and that you managed to fix this error.

We’d like to hear more on this subject from you so please drop us a comment in the dedicated section below.

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