Windows 10 reboot loop after installing latest security update, suggested usual fixes don’t appear to be working.

You pasted some generic solutions that almost entirely comprised of things the OP said they had tried and didn't work, culminating in a solution that the OP said was an absolute last resort that they wanted more info on.

I can understand why they might be frustrated by the answer.

I myself am facing a similar issue and tried similar steps to the OP before coming here. I appreciate the effort, but a copy and paste set of steps is not helpful in this case.

Were you wanting help with the steps I gave you that ALWAYS work to fix WIndows when it won't start, unless the hardware has failed?

Those steps could not be more complete, compiled after helping with tens of thousands of such failures over a dozen years in forums. If WinRE repair mode doesn't work then I show you how to create the bootable media. Then I show how to do every single repair that can get WIndows started, leading up to if necessary doing a Reset or Clean Install. I even show you how to rescue your files if they're not backed up. No one on the internet gives more complete steps that consistently work to get Windows started.

Hi Latrios. I'm Greg, 10 years awarded Windows MVP, here to help you.

Once an update reinstalls and repeats the same problem, either System Restore or Uninstall it again and then immediately run Hide Updates tool to catch and hide the Update before it installs again. I hope you enabled System Restore when you got into Windows as it is your first line of defense, if not you can use the Uninstall Updates button in the Winre Repair Mode.

Use whichever method works in this link to get into Repair Mode so you can try the necessary repairs or do a Reset:

https://www.tenforums.com/tutorials/2294-advanc...

Easiest is to force shutdown by holding in the power button. Do this twice. The third time you power on it should start into Repair Mode. Once in the Repair Mode try the numbered steps below.

It may be necessary to create bootable media on another PC to access Advanced Startup Options to try repairs, a Reset or do the Clean install. The bootable media has it's own set of files so that repairs or Reset might work better, doesn't require a password, and you'll have it to if necessary do the vastly superior Clean Install.

To create Windows 10 Installation Media on another PC install Media Creation Tool and follow the directions here: https://www.microsoft.com/en-US/software-downlo...

Insert media, boot it by powering up PC while pressing the BIOS Boot Menu Key given here: https://www.sysnative.com/forums/hardware-tutor...

If the media won't boot you may need to enter BIOS/UEFI Setup (pressing key given in chart in link above) to turn off Fast Boot or Fast Startup first.

Choose the boot device as a UEFI device if offered, on second screen choose Repair Your Computer, then Advanced Troubleshoot Options, then:

1. Try a System Restore, working backward.
2. If that fails try Uninstall Updates as far back as necessary to see if this was caused by an Update. If Steps 1 or 2 get it started then immediately check Windows Update for Updates and hide them using this tool: https://www.tenforums.com/tutorials/8280-hide-s...
3. Open the Command Prompt to:

a) run System File Checker: https://www.wintips.org/how-to-run-sfc-offline-...

and DISM: https://www.ubackup.com/windows-10/dism-offline...

b) run a full Disk Check: https://www.windowsdigitals.com/how-to-run-chkd...

c) trigger Safe Mode with Networking (for internet) or Safe Mode following Option 3 here: https://www.digitalcitizen.life/4-ways-boot-saf... to roll back Updates & Drivers in Windows Update History, update your drivers from the PC/Motherboard manufacturer's website and diagnose further with these steps: https://www.howtogeek.com/164876/how-to-use-saf....

You can also create a new Local Admin account to replace yours: https://www.isumsoft.com/windows-10/3-ways-to-c...

d) To replace the User account try to enable the built-in elevated Admin account from Option Five here:

https://www.tenforums.com/tutorials/2969-enable...

Boot into this emergency Admin account (leaving password box blank) to create a new Local Admin account:

https://www.isumsoft.com/windows-10/3-ways-to-c...

Sign into the new Account, make sure it works correctly, if so move your files over via C:\Users, when ready delete the old account and change the new one to your MS Account if desired in Settings > Accounts > Your Info > Sign in with a MS Account instead.

4. If those fail then go back to Troubleshoot Options to do a Reset. Make it a deep clean reset to set up a new account, with Cloud option to download fresh installation files so it doesn't use old onboard files that may be corrupted.
5. If that fails choose Install Now, then Custom Install, then at the drive selection screen delete all partitions down to Unallocated Space to get it cleanest, click Next to let it create needed partitions and start install - this makes it foolproof. Everything needed to Clean Install is here: http://answers.microsoft.com/en-us/windows/wiki...
6. If you have files that aren't backed up you can use the same bootable media to try to rescue your files using these methods: http://answers.microsoft.com/en-us/windows/wiki...

Your files should be backed up at all times if you value them at all. In the Clean Install tutorial in Step 5 I give the best methods to back up.

I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.

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