Passkeys not working after swapping cpu

[Viktor277]

After swapping the cpu i got a prompt related to ftpm and bitlocker (i don't have one), which i didn't read at all and just pressed N. I don't see an option in bios to clear or reset ftpm, tried to do it in windows restarted multiple times but still doesn't work. Tried bunch of chatgpt resolutions still nothing. I haven't restarted the motherboard though. fTPM status is ''ready to use''.

[Eigenvektor]

The passkey was likely stored in the TPM. With fTPM, that is a physical part of the CPU itself. So by swapping the CPU you essentially lost access to it.

 

Can you sign in with a username and password and create a new one?

 

7 minutes ago, Viktor277 said:

 haven't restarted the motherboard though.

I assume you mean you didn't reset the BIOS?

[Viktor277]

3 minutes ago, Eigenvektor said:

I assume you mean you didn't reset the BIOS?

Yeah because i need to set fan curves again.

I can sign in normally and create as many passkeys as i want and also delete old ones, but actually signing in using the passkey never works, no matter the account.

[Skiiwee29]

Can you swap the OLD CPU back in, backup the Passkey data/info and swap and reload it all in?

[Viktor277]

Just now, Skiiwee29 said:

Can you swap the OLD CPU back in, backup the Passkey data/info and swap and reload it all in?

no its sold.

[Sawa Takahashi]

Here's something that may yield some answers you are looking for.

Quote

To reset fTPM (Firmware Trusted Platform Module) data, which usually appears after a CPU change, press 'Y' at the prompt to clear it, but ONLY if you don't have BitLocker enabled; otherwise, you'll need the BitLocker recovery key or must reinstall the old CPU to recover data, or you can manually reset it in your computer's BIOS/UEFI settings by finding the Security or Trusted Computing section and selecting the option to clear/reset the TPM. 

 

According to this you either need to answer Y or backup the key from the old CPU. Since you cannot do either, the third option is to reset the TPM in BIOS.

If that doesn't work, you can probably work around by installing another CPU, answering Y when the dialog pops up and then replace with your current CPU.

Good luck !

[Viktor277]

5 hours ago, Sawa Takahashi said:

Here's something that may yield some answers you are looking for.

According to this you either need to answer Y or backup the key from the old CPU. Since you cannot do either, the third option is to reset the TPM in BIOS.

If that doesn't work, you can probably work around by installing another CPU, answering Y when the dialog pops up and then replace with your current CPU.

Good luck !

I cannot find the reset ftpm option anywhere in the bios and i tried many times. I tried resetting cmos as well but no luck. Is it possible that the option is missing because reasons? Or any hard reset method? And will windows reinstall solve this?

[Sawa Takahashi]

2 hours ago, Viktor277 said:

I cannot find the reset ftpm option anywhere in the bios and i tried many times. I tried resetting cmos as well but no luck. Is it possible that the option is missing because reasons?

I don't know which motherboard/BIOS you have but it should be something like : 

Quote

BIOS Setup > Go to Peripherals Tab > Select the Trusted Computing option > Disable the Security Device Support option > Save and Exit

I don't think resetting the CMOS would do the trick. The TPM is a separate data vault than the BIOS and BIOS settings.

It is possible the option is not present if your BIOS dates from waaaay back. You may try to flash the latest BIOS in case it helps but I have my doubts.

2 hours ago, Viktor277 said:

Or any hard reset method?

Do an hammer and crowbar count ? fTPM is to prevent hard reset methods. But if you don't have bitlocker enabled it shouldn't affect the outcome.

2 hours ago, Viktor277 said:

And will windows reinstall solve this?

Sure. If you wipe your boot drive and then install a new Windows, it should forget the missing old keys. Be sure to wipe before reinstalling. If you reinstall over the old Windows, the keys may survive and the issue will persist.

 

Have a nice day !