Fixing Dell "TPM is not detected" Error – BIOS & Hardware Solutions

The Trusted Platform Module (TPM) is a critical security feature in modern computers, enabling encryption and secure boot processes. However, Dell users may occasionally encounter the "TPM Not detected" error, which can disrupt workflows, especially for Windows 11 users requiring TPM 2.0. This error typically stems from BIOS/firmware issues or motherboard hardware problems. Below, we’ll guide you through troubleshooting and resolving this issue safely.

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🛠️Common Causes of the TPM Error

Outdated/Corrupt BIOS: An incompatible or damaged BIOS version may fail to detect the TPM.
Disabled TPM Settings: The TPM might be turned off in BIOS configurations.
Hardware Failure: A faulty TPM chip or motherboard component.

✅Basic Fixes: Update or Revert BIOS

Step 1: Download the Correct BIOS Version

Visit Dell’s Support Website and enter your Service Tag (found on the device or packaging).
Locate the BIOS section and download the latest version (or an older stable version if you suspect a recent update caused the issue).

Step 2: Install the BIOS Update

Run the downloaded BIOS file and follow on-screen instructions.
Do NOT interrupt the process—this can brick your system.

Step 3: Verify TPM Settings

Restart and enter BIOS (press F2 or Del during boot).
Navigate to Security > TPM (or Intel PTT for newer models).
Ensure TPM is Enabled. Save changes and reboot.

Advanced Fix: Modify BIOS Settings (For Experts)

🧰 2. Fix BIOS Firmware Using Intel Tools

Tools Needed:

MEA (Manufacturing Enablement and Audit) Software: For BIOS extraction.
Intel Flash Image Tool (FIT): To modify BIOS settings.

📥 Download Tools:

Download ME Analyzer (your BIOS file and determine the exact Intel ME version.)
Download Intel Flash Image Tool (FITC) version.
Download CSME Repository pack.

🛠️ Steps to Modify BIOS:

Backup your BIOS (dump using a CH314 or RT809 programmer or BIOS utility).
Drag and drop your backup BIOS dump into ME Analyzer – confirm ME and Flash Image Tool version. here 11.6.29
Open FITC and Drag and drop your backup BIOS file.

🧩 Make Necessary Changes in FITC:

Go to Build > Build Settings ➤ Change "Generate Intermediate Files" from Yes to No
Navigate to Platform Protection > Intel® PTT Configuration ➤ Make sure all values are set to "Yes" or "Enabled"

If all values are already enabled and the TPM error still exists, it could be a hardware issue (e.g., damaged TPM chip). You may need to replace the TPM IC.

💾 Build & Flash the Modified BIOS:

After changes are made, return to the Build tab and click "Build Image"
(Optional) You may also clean the CSME (Converged Security and Management Engine) region before flashing
Flash the final BIOS image back to your motherboard using a BIOS programmer.

✅ Conclusion

Fixing the Dell TPM Not Found error may look technical, but with the right tools and careful steps, it can be resolved — often without needing hardware replacement.
However, if BIOS-level fixes don’t solve the problem, you should consider checking or replacing the TPM hardware on the motherboard.