Latitude 5480 TPM Device Not Detected Error

me too , I have no idea how to solve it.

Hello,

I have the same problem in my Latitude 5480. I have tried install a BIOS outdated version, but this did not downgrade.  Has someone found any solution? Thank you,

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I confirm it works with an ajustment: i've unplugged the bios battery too.

You can use "Dell Command Configure Wizard" and generate a package for your configuration

F.

Just want to add new inquiry regarding this thread. I recently got a refurbished Dell Latitude E5480 and i had experienced the same problem with TPM not visible in bios. I have already followed some steps from basic to complex and even compare problems with other brands but to no avail.

I wonder if someone was able to figure out whats going on. 

Dell Vostro 5568, i5-7200U 8GB/256GB. I've spend several days searching how to get rid of annoying alert on startup that "TPM device is not detected". Alerts starts after upgrading BIOS to 1.20. Unplugging power for 30sec doesn't work for me.

Another thing is that in BIOS in security tab, there was no TPM bar no longer, so I wasn't able to change any setting regarding TPM.

But I was wondering why sometimes alert doesn't show up. When alert doesn't show up during boot - in device manager TPM 2.0 was active and working. If alert shows up then in device manager it was hidden with error "device not found/plugged in".

Solution that worked for me:
After boot without error (sometimes happen), I've turned off the notebook.
Pressed simultanously both CTRL+ESC keys and while holding them turn on the notebook.
Options of BIOS rollback will appear.
I've choose to rollback to last one (1.15), because there was no problem with alert and the option TPM was visible in BIOS before (to do such rollback, in BIOS you have to enable rollback to older versions).
After rollback OS WIN10 doesn't starts but I went to BIOS and unboxed tip in TPM.
Then I've make new installation of WIN10 from USB.

As a result, there is no more alert.
Also I've succesfully updated BIOS to 1.20 and TPM bar is visible in security tab.

It looks like during installing BIOS there's lookup for TPM, and if it's off or you have power problems (AC adapter corrupted/weak, or using docking station) then after BIOS upgrade you can get TPM error

Hope it helps someone of you that tries to resolve this problem.
Cheers!

Thank you AleksanderPL . Going back to BIOS v1.15 worked for me. I have tried a few later versions and could not get rid of the warning message at boot.

You do have to be able to see the TPM settings in the BIOS -> Security section. For me, that meant detaching and reattaching the main battery, the going immediately into the BIOS on the next boot.

Then set it to TPM On, but TPM Disabled, and click Apply. If it's already set that way and there's no Apply button, just go Enabled then Disabled so that you get the Apply button.

Reboot, no more warning message. As an experiment I then installed BIOS v1.27.0 . The probem immeditately came back, so I did the above procedure again, and it worked again.

Of course, this procedure doesn't fix TPM itself. It just gets rid of the POST warning.

I know this is an old thread, but I am  hoping someone found an answer or maybe my experience helps find one.  I recently purchased a used Latitude 5480 and found this same problem.  The BIOS version was 1.19 and there were no TPM settings in the Security tab in BIOS.  I read a number of the previous posts about the issue, so I knew that rolling back the BIOS version appeared to help some folks.  Instead of using the BIOS rollback feature, I downloaded version 1.16 from the Dell website and flashed it.  When I went to the BIOS screen, I still did not see any TPM settings BUT the TPM warning message was gone. However, when I booted Windows 10 Pro, the TPM did not show up in Device Manager and I got errors when I tried to upgrade the TPM 2.0 software.

Reading more posts, I found a link to a Dell article troubleshooting TPM issues.  The article mentioned a procedure for resetting the TPM in BIOS by turning off the laptop, disconnecting the main battery, pressing the Power button for 60 seconds, reconnecting the battery, and starting the laptop.  Another post said to go into BIOS immediately after completing the reset.  After doing this, I went back to the BIOS screen and there was an entry for TPM 2.0 settings under Security!  Further, TPM was On and Enabled.

After this, I booted Windows 10 Pro to check for the TPM but it was not present.  I re-started the laptop and went to the BIOS screen - the TPM entry was missing again under Security.  I shut down the laptop and performed the TPM reset again and the TPM entry reappeared in BIOS.

So, while I can access TPM in BIOS when I use the reset procedure, for some reason Windows cannot see it and the settings disappear from BIOS after booting to Windows.  Is it possible that I need to ensure that the TPM settings appear in BIOS first and then perform a fresh install of Windows?  Maybe my current Windows install is "corrupted" because I installed it before TPM showed up in my BIOS.  Is this a plausible answer?  Other thoughts?

An update on my TPM issue.  After reading more posts and reference documents, I have gotten further but the problem still remains.  I understand that I need to flash the TPM with the latest firmware (1.3.2.8) in order to make the problem go away.  In another post, it was recommended to flash the BIOS to the latest firmware before flashing the TPM.  These are the steps I took to flash the TPM firmware:

1. Flashed the BIOS with v1.29 downloaded from the Dell website.
2. Immediately after the BIOS flash, the system rebooted.  I turned off the system, unplugged the AC adapter, waited 60 seconds, plugged in the AC adapter and started the machine.  If it booted to Windows without the "TPM not detected" message, I went to the next step.  If not, I repeated this step until the message no longer appears.  Apparently, this process gives the BIOS a chance to detect the TPM.  I had to repeat this step 2-3 times before the laptop booted without the error.
3. To verify that TPM has been recognized by Windows, I went to Device Manager and looked for TPM under Security (probably unnecessary since it booted without the error message).
4. I opened a PowerShell window in admin mode and issued the "Get-Tpm" command.  This provided a list of the TPM details.  I was looking to make sure that the TPM was not provisioned.  In my picture, you can see that the device is not owned and the Auto-provisioning is off.
5. I ran the TPM firmware that I downloaded from the Dell website.  It confirmed that I was upgrading from 1.3.1.0 to 1.3.2.8 (see picture).  After giving a warning about the device not being owned (which I already verified), the laptop restarted to begin the firmware update.  After the restart, the firmware update program says that "The update image is not for this system".  The update fails and the laptop is rebooted.

The documentation on the website says that this firmware is for 5480/5488, so I would expect it to work for my 5480 laptop.  Any ideas on what could be happening?

I believe this will be my last post on this topic unless someone finds a different solution.

I went to the Dell website to double-check that I had the right TPM version for my laptop.  Previously, I had been searching for drivers using the model number (Latitude 5480).  In a Dell article on TPM firmware installation, it recommended searching for drivers using the service tag number.  When I did this for my laptop, it did not show a file for a TPM firmware update, even though there is one listed for a generic 5480 laptop.  I suppose that this means that my specific laptop is not eligible to be upgraded to 1.3.2.8. 

I hope someone proves me wrong.  For now, I rolled the BIOS back to 1.16 and disabled BIOS updates from Windows packages to prevent it from being upgraded and causing the TPM message to reappear.

Hello! I too have had this same issue. Mine is not completely fixed, however I am still able to navigate around it. 

When the screen pops up I run the test but exit out of it after it starts running. (Before it runs the full test) Then I hit the exit button at the bottom of the screen. It turns itself off and after waiting a few minutes I turn it back on and log in. It may sound weird…. BUT TRUST me when I say it works! It does this one or two times a day and I follow the same steps to get back on. It is not a complete fix, but it allows me to use it.

@MichalPL7​ Thks, work for me !! Battery and bios battery for a minute and bye bye error !! Thank you very much again