Windows 10 not detecting TPM despite it being on

[Aqua71]

Ever since Windows 11 needed a TPM 2.0 requirement, I have been curious if my Computer has TPM, which was already on even though the PC Health Check doesn't say it's on. Not even the TPM.msc says it's on. The driver shows up on the device manager and does nothing when uninstalled. I have also tried turning it off and on again and trying clearing it in the BIOS and Windows still doesn't detect it

[Paul_Tikkanen]

Hi:

I don't have an answer for you, but this is what I know thus far...

There are several posts such as yours where folks have the 15-ec model series.

The only thing I can think of is that there is a difference between having a firmware TPM 2.0 device and an actual TPM 2.0 chip.

If you look at chapter 1 of the service manual, page 3, you will see this security specification...

Security Trusted Platform Module (fTPM) 2.0, firmware based

Maintenance and Service Guide HP Pavilion Gaming 15 Laptop PC

I don't know what that firmware based description means.

I have a HP 15-ee047nr and under the security devices category in the device manager, there is both an AMD PSP device as well as a TPM 2.0 device.

My understanding is on your model, there is only an AMD PSP device.

If you look at the service manual (chapter 1, page 2) for my notebook's model series, it just shows a TPM 2.0 device, not a fTPM 2.0 device.

Trusted Platform Module (TPM) 2.0 firmware

Maintenance and Service Guide HP ENVY x360 15 Convertible PCIMPORTANT! This document is intended for...

So, unfortunately, I don't know what the difference is.

What you may want to do if you are running the W11 developer's OS on your notebook would be to report the problem to Microsoft using the feedback program, so they can figure out what to do with a quasi-TPM 2.0 device such as what your notebook has.

Interestingly, I cannot install the W11 developer's OS on my 15-ee047nr for love or money.

It keeps failing at 97%, so I gave up after trying it half a dozen times.

[jszht]

Actually, in Desktop Ryzen System, the fTPM (firmware TPM) module will not only report AMD PSP driver enable but also report the TPM 2.0 module enable for backward compatibility. This happens not only in AMD platform. In Intel platform, PTT works as the same way.