Hi,
Thank you for reaching out and sharing all those details. I can imagine how frustrating it must be to go through this and still not be able to log in. Let’s try to narrow down what’s happening. When you enter the new password, does it immediately say it’s incorrect, or does it look like it’s accepting it and then fails during sign-in? Also, can you confirm if you’re able to sign in to your Microsoft account on a web browser from another device?
This will help us figure out whether the problem is with the account itself or something on your PC, like TPM corruption affecting local authentication. If you can log in online, then the issue is likely with the device rather than the account.
Here’s what you can try: first, check if the password works by signing in at https://account.microsoft.com from another device.
If that works, your account is fine, and the problem is local. Next, try booting your PC into Safe Mode with Networking and sign in there. If it works in Safe Mode, then the TPM issue is probably blocking normal login.
Hope this helps! Let me know what happens.
Kind regards,
Edward