TPM Security Data Change Detected Issue and Sign-In Not Working After BIOS Update

[GQM]

After the latest BIOS update from HP, installed on 6/03/26, my laptop restarts to a screen that tells me "TPM Security Data Change Detected." The options it gives me are:

[Press F1] Clear and reset the TPM
WARNING: This will permanently erase all stored security keys. Windows will likely require you to enter your BitLocker recovery key to unlock the system after reset.

[Press F2] Continue Booting
WARNING: TPM-dependent security features may be affected until the configuration change is completed.

When I press F2, I am brought to the regular sign-in screen. However, where I would usually log in with a pin, it says "Something happened and your PIN isn't available. Click to set up your PIN again." Clicking that button does nothing, no matter how many times I try. I am able to try the password sign-in option, but every attempt shows as "incorrect" despite me using the password that logs me in to my Microsoft account and passwords I have used on my local account. It's possible there's an older local password I don't remember, but clicking the option to reset it does nothing. I'm also not sure there was even a local password set since I always logged in with my PIN.

Fixes I've Considered:
1)  I don't think my local account was signed in to Microsoft online, but just in case, I've tried resetting my Microsoft password from my account on a separate computer. That change doesn't apply to the laptop sign in (and I do have it connected to the internet).

Edit: I have attempted using a password recovery disk created on another computer that uses Windows 11. When I finish the process, I am given the error message: "An error occurred while the wizard was attempting to set up a password for this user account." So it looks like there's something wrong with the sign-in in general after this update.

2) I am hesitant to press [F1] in case it asks for a BitLocker code, which I don't have. I've checked my online Microsoft account for one and it's not available. I also never set BitLocker up myself, and when I checked with Microsoft support, they suggested the manufacturer or seller might have set it up. I bought this laptop a few years ago, and I doubt whoever set it up, if that's what happened, is still around with a BitLocker code. In that case, I have no idea how I'm supposed to have one or who I could contact to get one. My warranty is out of date and HP support is behind a paywall, so I can't call and ask.

3) I've seen suggestions to roll back the BIOS update, but I'm not sure if that's something I should attempt myself, get a technician to do, if I can even do it without signing in, or if that should be a last resort. Ideally, I'd like to try signing back in to see if there are additional updates or fixes that would resolve this issue.

4) Microsoft support suggested a clean installation of Windows 11, but even they admitted it might not fix a BIOS issue and that I should contact the manufacturer about rolling back the firmware update. Without being able to sign in to my laptop or contact HP without a subscription (which I'd rather avoid, given this was their automatic update and not user error), this is the only way I know to request support on that matter.

5) I have considered a factory reset, but I am unsure if that will fix the BIOS and PIN issue, and I'm not sure whether that would be preferred to a Windows clean install. I am also hesitant to try that and lose the potential to recover or reset a password and sign in.

If anyone has a fix that will not brick my laptop, I would love to know what my options are starting from the least invasive. All my personal documents are backed up on USB drives and I'm not worried about resetting if it comes to that.