TPM Module Default Owner Password

[tjenkinson]

I bought a HP Envy x360 laptop that comes with a TPM chip. I would like to enabe bitlocker with TPM but first want to set the tpm owner password. I can't do this though becasuse I don't know the current one. I have cleared the TPM from the bios but whenever I go to tpm.msc the 'Prepare the TPM...' option is grayed out and it look like a password has already been set? How do I change this?

Thanks

[tjenkinson · Accepted solution]

There is no default password. It appears by default windows now sets it to a random value on boot if it is not initialised, which it doesn't store anywhere.

http://superuser.com/a/1125435/114938

If you run the following command then reboot and clear the tpm you'll see it isn't initialised and you can then initialise it from windows.

https://technet.microsoft.com/en-us/library/jj603114.aspx