“Something went wrong and your pin isn’t available (code:0x8007007f). I cannot access my computer please help me

Hi Lance. I'm Greg, 10 years awarded Windows MVP, specializing in Installation, Performance, Troubleshooting and Activation, here to help you.

It sounds like your account is corrupted as evidenced by the password not being accepted. So one of the repair steps I'll give you is to create a new test account from the Repair Mode or Bootable Media's Command Prompt to repair or replace your account so you don't need to lose the entire install if it's only your account that's failed.

Use whichever method works in this link to get into Repair Mode so you can do 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: http://windows.microsoft.com/en-US/windows-10/m.... Uncheck the box for Recommended Settings to choose the exact version and bit rate for the target PC only.

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,
2. If that fails try Uninstall Updates as far back as necessary to see if this was caused by an Update,
3. Open the Command Prompt to:

a) run System File Checker: https://www.wintips.org/how-to-run-sfc-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 https://www.intowindows.com/boot-windows-10-in-... to roll back Updates & Drivers in Windows Update History, update your drivers from the PC/Motherboard manufacturer's website and diagnose further: https://www.pcmag.com/news/354269/how-to-use-sa...

d) From the Command Prompt try to create a new Local Admin Account to replace your account: https://www.isumsoft.com/windows-10/3-ways-to-c..., sign in to test it, move files over, when ready delete the old account and if desired change the new one to your MS Account.

You can also try to repair the old account from the new one by running a Repair Install: https://www.tomshardware.com/how-to/fix-windows...

4. If those fail then go back to Troubleshoot Options to do a Reset.
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 get the best possible Clean Install is here: http://answers.microsoft.com/en-us/windows/wiki.... It is a better install than any amount of money can buy and a great learning experience that will make you the master of your PC because you will learn what works best and how to apply it with your own hands.

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.

________________________________________________________

Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the sites before you decide to download and install it.