XPS 15 9570, TPM device not detected

I have the same machine so it suggests Windows is mangled bad, so I suggest a fresh install of Windows 11

Mam podobną sytuację z XPS 15 9560, u mnie komunikat pojawia się na poziomie BIOS, po wciśnieciu kontynuacji wszystko jest OK, tylko już nie mam aktualizacji windowsa. W BIOS niema zakładki TPM, do czasu zniknięcia TPM wszystko było OK.

I have a similar situation with XPS 15 9560, for me the message appears at the BIOS level, after pressing continue everything is OK, but I don't have windows updates anymore. There is no TPM tab in the BIOS, everything was OK until TPM disappeared.

I had this issue today an hour ago on my XPS 15 9570 with a new motherboard with the i9-8950HK from early June 2025 when my original i7-8750H motherboard died on May 28, 2025 due to the capacitor burning down and also burn whatever was right under the F5 key.  

Before this, I held down power button for 25 seconds to reset the RTC CMOS which did not fix the problem.

The way I fixed it didn't involve opening up the computer.  

I saw in the XPS 15 9560 thread here:
https://www.dell.com/community/en/conversations/xps/xps-15-9560-alert-tpm-device-is-not-detected/647f8477f4ccf8a8de357c51?commentId=6605e821d478b1269a47496c

Where it says:
1) Unplug AC Adapter cable, wait 1 minute
2) Hold down Ctrl+ESC while plugging the AC Adapter back in and system should turn on itself
3) It will show a BIOS Recovery Menu
4) Select reset bios back to default

In my case, I didn't do step 4 because I tried to memorize the post and instead select Cancel and it fixed it.  #4 might be the correct choice.

This brought back the missing TPM setting under Security in the BIOS.

I suggest checking for a UEFI update as well as Windows 11 needs an updated UEFI for secure boot.

@HedgeFundManager​ - That's only for people who do not have the 2023 certificates which still would not have a problem until June 2026.  This is a different issue and I already have the updated UEFI that expires in June 2026.
As that is covered here:
https://support.microsoft.com/en-us/topic/windows-secure-boot-certificate-expiration-and-ca-updates-7ff40d33-95dc-4c3c-8725-a9b95457578e

@HedgeFundManager - Dell has this:
https://www.dell.com/support/kbdoc/en-us/000132757/tpm-option-is-missing-in-the-system-bios-setup-latitude-precision-or-xps

except there is no recent TPM 2.0 firmware available for download as the newest I have found was from 2021 with the filename:
DELLTPM_NPCT750_7.2.2.0_64_v1.exe

I suggest if your machine is problematic with the latest UEFI image you may need to reset your UEFI keys to default and windows may be able to install new keys etc

@HedgeFundManager​ - They are two different issues.  My fix is to fix the problem of the TPM 2.0 setting missing from the BIOS settings under Security which is related to the machine showing Alert - TPM Device not detected before the machine even boots.  Until the BIOS has the TPM setting, Windows will not see the TPM device.  The last time I reset the UEFI keys, it resulted in Secure Boot no longer working while Secure Boot disabled would still work as seen in the thread here which I later fixed in comment #35:
https://www.elevenforum.com/t/how-to-fix-this-operating-system-loader-failed-signature-verification.29175/

They are two different problems and what UEFI update are you referring to because there was only things to update the secure boot database as mentioned here:
https://techcommunity.microsoft.com/t5/windows-it-pro-blog/updating-microsoft-secure-boot-keys/ba-p/4055324

Dell claims it's the TPM 2.0 firmware that is the cause of the initial issue except there is no newer than 2021 TPM 2.0 firmware for the XPS 15 9570.  There is another update mentioned at https://support.microsoft.com/en-us/topic/guidance-for-blocking-rollback-of-virtualization-based-security-vbs-related-security-updates-b2e7ebf4-f64d-4884-a390-38d63171b8d3#ID0EBBFBH=Use_the_SiPolicy.p7b_audit_policy&articleFooterSupportBridge=communityBridge&articlefootersupportbridge=communitybridge but the system will BSOD as soon as it tries to boot regardless of the Windows 11 build as I am on the Insiders Beta channel not with the registry change but with the SkuSiPolicy.p7b file and the only fix is deleting or renaming the file.  Ofcourse I had not tried with my new motherboard yet as unlike the old system, there is no longer the mouse lag and byutv.org no longer froze the entire machine in Google Chrome and Microsoft EDGE browsers either while Firefox had always worked fine so it could be I had a bad motherboard originally or a bad CPU.  

@HedgeFundManager​ - The problem has nothing to do with the UEFI image as when I reset the UEFI Keys to default, all it did was cause Secure Boot enable to no longer boot the OS as seen here while Secure Boot disabled would work fine:
https://www.elevenforum.com/t/how-to-fix-this-operating-system-loader-failed-signature-verification.29175/

And what UEFI image are you referring to as this was exactly what I did before resetting the keys using the instructions below:
https://techcommunity.microsoft.com/t5/windows-it-pro-blog/updating-microsoft-secure-boot-keys/ba-p/4055324

This one is the one that I had never gotten to work as while the registry entry is fine, the SkuSiPolicy.p7b will cause the XPS 15 9570, at least my old system to BSOD right after the spinning circle but will boot fine as soon as the SkuSiPolicy.p7b is either deleted or renamed:

https://support.microsoft.com/en-us/topic/guidance-for-blocking-rollback-of-virtualization-based-security-vbs-related-security-updates-b2e7ebf4-f64d-4884-a390-38d63171b8d3#ID0EBBFBH=Use_the_SiPolicy.p7b_audit_policy&articleFooterSupportBridge=communityBridge&articlefootersupportbridge=communitybridge

The original issue at hand has nothing to do with Windows as soon as you turn the machine on, Dell SupportAssist will complain with an error that says "Alert - TPM Device not found" which is basically in the BIOS Settings, the TPM 2.0 setting under Security section in the BIOS would be missing.  Windows will not see the TPM 2.0 device until that setting shows up in the BIOS as I experienced it 4 days ago which was why I posted the solution.  Are your answers from personal experience with the TPM missing?  Also, there is no need to do a fresh install of Windows 11 even when it has gone bad, the first course of action should be doing a in-place repair install/upgrade using an ISO using the same or newer build of Windows which will usually fix most problems while keeping both the apps and data 
and in the worse case, you would simply reset Windows which will delete all apps and data.  This is from experience as I am both a Windows Insider in the Canary and Beta channels so I do the repair install very often as the Windows Update does not always update the WinRE with the latest while the Repair Install always will as I had things that broke because Windows has gotten faulty.  

Dell as I mentioned in the last comment claims the TPM not detected issue is caused by the TPM 2.0 firmware except as I pointed out, the last TPM 2.0 firmware for the XPS 15 9570 is from 2021 unless there is a newer one I am unaware of.  Should that be the case, can someone else point it out with a link? 

As for the Alert - TPM Device not detected problem which is what the original poster was writing about, did you actually personally experience this issue or are you guessing that is the solution?  The only reason I commented in the thread is because I personally experienced it only 4 days ago and fixed it within 1 hour even though the fix takes less than 1 minute with how to fix it.  

Also, it is hard to say have the same system because the configuration is different and the XPS 15 9570 has two different motherboards made by more than one company.  Yes, Compal designed the original system but there are motherboards with CPU/GPU heatsinks with 4 screws and another with 5 screws.  Both of mines are 4 screws, the one with the i7-8750H that failed is made by GCE while the current i9-8955HK is made by HSB.  Mines is also a Signature Edition sold by Microsoft Store which only contains Windows 10 and drivers, it does not have all the bloatware or third party software that people normally get.  But the original problem is not even Windows related, the computer as in the BIOS has to see the TPM's existence before any Operating System (OS) will see it as the BIOS is what sits between the OS and the hardware itself.  If the BIOS says no, the OS will not be able to say yes since the OS can only use what the BIOS says is available, not what is not available.

I suggest using the Windows 11 media creation maker and use that to install windows fresh

@HedgeFundManager​ - Interesting all you post are one liners and completely ignoring what was asked.

None of your responses are even related to the problem.  This is a recent comment that shows my method for fixing works:
https://www.dell.com/community/en/conversations/xps/xps-15-9570-tpm-and-ptt-missing-not-found/684c2e955f0def29c3019ec9?commentId=6894f02146b5076802620ca6

I own a XPS 9570 so I suspect if there is a TPM issue, I suggest reset the UEFI to factory default and try windows fresh

My machine came with Windows 10 pro and Windows 11 runs on it fine, mind you I have 64GB RAM installed

@HedgeFundManager​ - The TPM issue is not related to Windows since if the BIOS itself is missing the TPM setting and this is part of POST where the Alert shows up so it's prior to Windows and the TPM would not be seen by any OS if the physical machine does not see it first.  You just never saw the problem and it's *not* from personal experience as I said.  It is not even related to the UEFI.  Did you bother even reading what I wrote instead of talking theory without actually experiencing the issue?   I also have 64GB of Mushkin Redline 32GB DDR4- 2666 CL16 installed.  Owning a XPS 9570 means nothing as this is a common problem with all Dell machines, not just notebooks and it's not related to Windows. 

Once again, suspecting a issue is not the same as actual experiencing the issue and fixing it as what you lack is personal experience which is what matters.  @Penguin Puck experienced the TPM issue and my fix also worked for him as he can confirm.  Please don't post a hypothesis without having the problem and then trying out what you suggested to confirm what you stated is actually true.  Your solution is no different than script readers who basically tell someone to format their computer to fix a issue that takes less than 1 minute to fix as you apparently don't look at other people's data as valuable.  There is something called an in-place repair install which should be tried first before anything else as it let's one keep all apps and data.  There is no need to try Windows Fresh or even resetting the UEFI to factory default which will not help in this situation as the problem is at the BIOS (Basic Input/Output System) which is what all OSes including Windows will communicate with.  If the BIOS cannot see the TPM, it will tell Windows "No" to TPM and Windows will treat it as not seeing the TPM as well.  This will be my last response to you on this thread and all your responses is basically incompetent without due diligence whatsoever.

The should be an option for the TPM on XPS 15 9570 and this is telling me there is some restrictions in the UEFI for some reason.  This is why factor defaults should be tried and then see of Windows still spews TPM errors