What is TPM?
TPM is a hardware-based security feature used to securely store cryptographic keys, passwords, and other sensitive data. It plays a significant role in enabling Windows security features like BitLocker, Windows Hello, and Secure Boot.

When Should You Clear TPM?
Reinstalling Windows or Resetting the PC:

If you are performing a clean installation of Windows 11 or resetting your device to factory settings, clearing the TPM can help remove cryptographic data linked to the previous installation.
This ensures the new installation starts fresh, without leftover security artifacts.
Transferring the Device:

If you’re selling or giving away your PC, clearing the TPM is essential to remove your sensitive data.
Risks of Clearing TPM
Loss of Encrypted Data:
Clearing the TPM will erase all the data tied to it, including encryption keys for features like BitLocker. If you don’t back up your recovery key or decrypt your drives beforehand, you may lose access to encrypted data.
Reconfiguration Needed:
Features like Windows Hello, BitLocker, or other TPM-reliant services will need to be set up again after clearing.
Steps to Ensure Safety
Back Up Data:

Before clearing TPM, ensure you have backed up all your important files.
For BitLocker, ensure you have the recovery key saved.
Decrypt Drives (If Necessary):

If you’re using BitLocker, decrypt the drives first to avoid losing access.
Understand Implications:

If your system doesn’t rely on TPM-based features, clearing it during a reset has minimal impact.
If TPM-dependent features are in use, you’ll need to reconfigure them post-reset.
How to Clear TPM
Access UEFI/BIOS:
Restart your computer and enter the UEFI/BIOS settings (usually by pressing F2, Del, or another key during boot).
Locate TPM Settings:
Find the security settings related to TPM.
Clear TPM:
Follow the on-screen instructions to clear the TPM.
Reconfirm During Boot:
Windows will typically ask for confirmation to clear TPM during the next boot.
Should You Clear TPM?
Yes, if you're performing a clean install or transferring the device.
No, if you want to retain TPM-stored data (e.g., encryption keys, credentials).
Clearing the TPM is generally safe as long as you’ve taken precautions to back up important data and understand its role in your system.

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