Windows no longer boots after latest insider update on 23rd June

Dear John,

Given the situation you've described with your Windows 11 PC after the latest Insider update, here is a straight answer to your questions.

Which option would be the better to preserve as much data as possible?

Creating a bootable USB drive is the superior option for preserving your data. The "Reset this PC" option, even with the "Keep my files" choice, will remove all your installed applications and settings. A bootable USB drive offers more versatile recovery options that can potentially fix the operating system without touching your personal files.

Can I use a Windows 10 bootable drive to repair my Windows 11 PC?

It is not recommended to use a Windows 10 bootable drive to repair a Windows 11 installation. While some basic command prompt tools might work, the repair utilities are version-specific and could lead to further complications or an unstable system. It is best to create a Windows 11 bootable USB drive using your second PC. You can do this by downloading the Windows 11 Media Creation Tool from the official Microsoft website.

Will my Windows 11 license key be available or retrievable?

Yes, your Windows 11 license key, especially if it is an OEM license, is embedded in the motherboard's firmware. When you reinstall Windows 11, it should automatically detect the key and activate itself once the computer connects to the internet. You do not need to manually retrieve it.

Recommended Next Steps

Given that you are facing "CRITICAL PROCESS DIED" and are unable to use System Restore, a clean reinstallation of Windows 11 is the most likely solution. Here is a recommended course of action to maximize data preservation:

1. Create a Windows 11 Bootable USB Drive: On your second computer, go to the official Microsoft website and download the Windows 11 Media Creation Tool. Use it to create a bootable USB drive.
2. Boot from the USB Drive: Insert the bootable USB into the affected PC and change the boot order in the BIOS/UEFI to boot from the USB drive.
3. Backup Your Data: Once you have booted from the USB drive, do not proceed with the installation immediately. Instead, press Shift + F10 to open a Command Prompt. From here, you can use command-line tools like robocopy or even open Notepad (by typing notepad.exe) and use its "File > Open" dialog as a rudimentary file explorer to copy your important files to an external hard drive.
4. Attempt a Repair (Optional but Unlikely to Succeed): Before reinstalling, you can try the "Repair your computer" option available when you boot from the installation media. However, given the errors you have encountered, this has a low probability of success.
5. Clean Install Windows 11: Proceed with a custom installation of Windows 11. When prompted, select the C: drive as the installation location. It is advisable to format the drive during this process to ensure a clean installation, but be aware this will erase all data on that partition. This is why backing up your data in the previous step is crucial.

Best Regards,

I had to create a bootable drive and do a full Windows re-install.
It was not possible to repair the previous installation, but all the contents of the previous C: drive were available as drive G:, so I made a backup of that to an external SSD.

System is basically back tp normal now, although I still have quite a few things to install and configure.

Like other comments have said, bootable media is a straightforward process to repair your corrupted files through a clean disk image.

However, you can also repair your PC in other ways, which can be less troublesome, as listed below:

• If you can, attempt to enter the Windows Recovery Environment, either by pressing Win to open the Start Menu, where you will navigate Power > Restart and hold Shift while pressing Restart, which will reboot the PC and open WinRE. You can then attempt various troubleshooting methods, such as using the Command Prompt to repair corrupted files. You can use various tools such as SFC (System File Checker), DISM (Deployment Image Servicing and Management), CHKDSK (Check Disk), as well as third-party software. To start utilizing the recovery tools, you can read the following support articles:

1. Use the System File Checker tool to repair corrupted or missing system files - Microsoft Support. You can also use the command below to run a typical scan:

sfc.exe /scannow

Note The next link (2) is intended for support agents or IT professionals. However, it is helpful for advanced troubleshooting.

1. See above
2. Advanced troubleshooting for Windows boot problems - Microsoft Learn.
3. CHKDSK - Microsoft Learn Now, regarding your Windows activation license, it depends on several factors. But, namely, it can be decided as such. This answer has already been covered, but to recap:

• If you have linked your activation key through digital licensing, a form of tying your key to the system's hardware (such as the BIOS or UEFI), it will be automatically activated upon a reinstall. If you have the digital license tied to your Microsoft account, then it can be accessible most of the time, even if you change hardware. In your case, you have your product key attached to a hardware license, which will automatically activate.
• If you have not linked your activation key, you may need to re-enter it upon an installation prompt. For more information, see Activate Windows.

It is advised to create bootable media, especially if the bootable media contains a clean install of Windows 11 or your previous operating system, before boot failure.

To answer your question, yes, the bootable media can then help repair your corrupted PC.

On the topic of the stop codes you have encountered, "SYSTEM SERVICE EXCEPTION", 0x3B, or 0x0000003B indicates that an exception or fatal error has occurred in a critical system service or driver. "CRITICAL PROCESS DIED" indicates that a critical process, such as csrss.exe, wininit.exe, for example, have been stopped or terminated while the computer is running. The system halts all action, provides the BSoD and more information, and proceeds to restart to reduce further damage. This can happen due to many factors; however, these are only a few:

• Limited resources. The process can be stopped by the system due to low resources, in an act to reserve resources for other actions.
• Illegal action. This could happen while processing an illegal action requiring the process, such as dividing by 0, and even forcefully stopping the process itself.
• Resource exhaustion. This can occur due to software bugs, multiple programs stripping already limited resources, or a DDoS (Distributed Denial of Service) and/or DoS (Denial of Service) attack, and much more.

But knowing your PC may not be running many programs right now, it is unlikely that a few of the actions listed above to occur.

Regarding your other questions, such as notices with personal files on other partitions and files worth backing up. Here is some information. Drive/Partition X is the lightweight Windows Preinstallation Environment (WinPE) drive with basic needs, except that it can only be accessed while booting into a WinPE session.

Note WinRE (Windows Recovery Environment) and other troubleshooting options run on the Preinstallation Environment, which is why you are defaulted to X:\WINDOWS\System32\ in the Command Prompt.

As for backing up files you want to keep on your PC after a clean install, you can enter the Command Prompt while booting from your clean media, and copy all or separate files in a directory to an external storage device, like Smith said. However, as you guessed, only the C: drive will be affected during the recovery process, meaning your data is safe on the M.2 drives. However, you can also freely uninsert these drives from your motherboard's M.2 slot if you feel such. Upon reinstalling, just make sure not to format one of your M.2 drives on the prompt. Now, you may not need to back up your Recovery directory; C:\WINDOWS\Recovery, as a clean reinstall will provide similar recovery files. Yes, a clean reinstall wipes everything on the C: drive, but it provides clean system files, such as clean recovery files. If the recovery folder you are mentioning is not an ordinary system file that came with your copy of Windows itself, then you will indeed have to back up the directory, as well as its contents.

MediaCreationTool.exe will create bootable media no matter what, even if your Windows 10 machine being used to create the bootable USB drive, does not meet the requirements. This will only fail if the system being repaired does not meet requirements. Both the Media Creation Tool and Rufus will be adequate to create a clean USB to boot from.

If I could help you today, let me know by marking my answer as helpful or accepting it.