Many modern Windows computers are equipped with a Trusted Platform Module (TPM) chip, which boosts system and data security at the hardware level. For instance, the chip utilizes cryptographic keys and advanced encryption to protect your sensitive data from malicious attacks. However, if you encounter the "TPM device not detected" error, you lose these security benefits. This guide will walk you through the steps to resolve this issue.

Useful information: If you're facing the "Local security authority protection is off" error on your PC, we have a solution for that as well.

Table of Contents

• Checking for a TPM Chip
• Simple Solutions to Try
• 1. Activating the TPM
• 2. Updating the TPM Firmware
• 3. Clearing the TPM Cache
• 4. Resetting the BIOS
• 5. Replacing the TPM Module
• Common Questions

Checking for a TPM Chip

The "TPM device not detected" error might appear if your computer lacks the TPM module. Fortunately, there are several methods to verify if your PC has a TPM chip. If it doesn't, consider reaching out to your computer's manufacturer to see if installation is possible for your model.

If your computer is equipped with a TPM chip, proceed with the troubleshooting steps listed below to fix the error.

Simple Solutions to Try

Before delving into more intricate fixes involving BIOS and Windows Security settings, try these straightforward solutions:

• Restart your computer: Power issues can occasionally cause the TPM to malfunction. To address this, perform a power cycle by shutting down your PC normally, unplugging it (laptop users with removable batteries should remove them), waiting for 30 seconds, and then turning it back on.
• Update the TPM driver: Updating the TPM driver might resolve any glitches. In Device Manager, expand "Security devices," right-click "Trusted Platform Module," and choose "Update driver." Allow Windows to automatically search for updated drivers.

1. Activating the TPM

The error message might simply indicate a disabled TPM chip. To activate it, access the BIOS on your Windows computer and follow these steps:

1. Navigate to the "Security" tab, then select "TPM State."

2. Choose "Enabled."

3. Press F10 and confirm "Yes" to save the changes and exit.

For computers with UEFI BIOS, the steps to enable TPM may differ based on the manufacturer. Generally, you can enable TPM in UEFI by following these steps:

1. In UEFI BIOS, select the "Advanced," "Security," or "Trusted Computing" tab. Here, we choose the "Security" tab and then click "TPM Embedded Security."

2. Enable the relevant option such as "TPM State," "Intel PTT," "Security Device Support," "Security Device," "AMD fTPM switch," or "AMD PSP fTPM." In this case, it's "TPM State."

Tip: If you're unclear about firmware and its functions, our guide can provide further insight.

2. Updating the TPM Firmware

Updating the TPM chip's firmware is another way to address the error message. However, the process varies by manufacturer, making it less straightforward.

Note: Ensure you update Windows before proceeding with the TPM firmware update.

Here are links to TPM firmware updates (with instructions) from popular PC manufacturers:

• HP / HP Enterprise
• Lenovo
• Panasonic
• Toshiba
• Fujitsu
• Dell

3. Clearing the TPM Cache

Clearing the TPM cache offers a quick and simple way to reset the chip, potentially resolving software-related issues.

Note: Before resetting the TPM, back up all critical data on your PC.

1. Search for "Windows Security" in the Windows Search box, and click on the top result.

2. From the left side menu, select "Device security," then click "Security processor details" on the right.

3. Click "Security processor troubleshooting."

4. In the "Clear TPM" section, choose a reason for clearing the TPM from the dropdown menu.

5. Click "Clear TPM."

6. Restart your computer to apply the changes.

Tip: Learn how to clear the cache on Windows.

4. Resetting the BIOS

The TPM's functionality relies on BIOS settings, and a corrupted BIOS can impact the chip. Resetting the BIOS might fix the "TPM device not detected" error.

5. Replacing the TPM Module

If all previous solutions fail and the error persists, your TPM chip might be faulty. You can remove the defective chip from the motherboard and install a working one.

However, this procedure involves several considerations, so it's advisable to consult with the original equipment manufacturer (OEM) or a support technician to find and install the appropriate module for your computer.

FYI: Microsoft is enhancing security with the Pluton Security Processor. Learn more about it here.

Common Questions

Can I install Windows 11 without TPM?

Yes, installing Windows 11 without a TPM is possible. Microsoft suggests using a TPM chip for enhanced security when installing Windows 11, but it's not a mandatory requirement that would prevent installation if your computer lacks one.

Is BitLocker part of TPM?

BitLocker's full-disk encryption feature requires a TPM-equipped computer. Attempting to enable BitLocker on a PC without a TPM will likely result in a message indicating that your administrator needs to set a system policy option.

Image credit: Pexels. All screenshots by Chifundo Kasiya.

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