This article provides information on how to reset the TPM chip and clear all previous owner details.
You may encounter an issue whilst attempting to reset the DDP|A or DCP credentials, where you are prompted for a Trusted Platform Module (TPM) ownership password.
If you have lost the TPM password, the TPM chip can be cleared using Windows.
The first thing to do is to remove any pre-boot passwords in the DDP|A console.
This will not affect the Windows password.
You must be able to validate just as in any credential scenario, and you must be an administrator on this system in order to perform this function.
Click Start. In the Search\Run box, type tpm.msc and press ENTER.
Under the Actions section on the right, click Clear TPM.
In the Clear the TPM Security Hardware box, check I don't have the TPM owner password and click OK.
You will be asked to Reboot. Just after the Dell POST screen, you will be prompted to press a key (usually F10) to clear TPM. Press that key.
Once the system reboots, you will be prompted to restart and follow the instructions to enable TPM. Restart.
Just after the Dell POST screen, you will be prompted to press a key to enable TPM. Press that key (usually F10).
Once back at the desktop, either the TPM Setup Wizard appears for you to enter a TPM owner password or you can choose Change Owner Password.
You can now clear DDP|A credentials through the DDP|A console.
For more information, please check out the article below :
Article ID: SLN155219
Last Date Modified: 04/03/2017 05:18 AM