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vonnp
Paper Tape
Posts: 5
Registered: ‎10-10-2019
Location: IT
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Message 1 of 9

Updated BIOS (N1WET56W (1.35)) but still no "Security Chip" option

Hello.

 

We are installing bitlocker in PCs and for some, TPM is deactivated and it has to be enabled in the BIOS, under the option "Security Chip". 

 

So my question is this: how does it that in some of these PCs, the "Security Chip" option is missing?

 

Here are the specs:

  •  Lenovo ThinkPad T470s
  • BIOS version: N1WET56W (1.35)
  • OS Version: Windows 10.0.14393
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Community SeniorMod
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Location: US
Views: 236
Message 2 of 9

Re: Updated BIOS (N1WET56W (1.35)) but still no "Security Chip" option

TPM is an option on T470s.  Some models have it and some do not.  Are all the machine types the same?  It will be on asticker on the back or on the BIOS screen


Rich


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.
vonnp
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Posts: 5
Registered: ‎10-10-2019
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Views: 226
Message 3 of 9

Re: Updated BIOS (N1WET56W (1.35)) but still no "Security Chip" option

Hi Rich,

 

Thank you for responding. The models are all 20JTS11X00 but, just as you said, some have the "Security Chip" options, other don't.

Since all of the "problematic" PCs are from remote hosts, we can't tell if they have a sticker or not. But we've verified that all of them are of the same model.

 

 

Community SeniorMod
Community SeniorMod
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Message 4 of 9

Re: Updated BIOS (N1WET56W (1.35)) but still no "Security Chip" option

I don't know any more.  If they are the same model, they should be the same.  The parts lookup for 20JTS11X00 shows they should have a TPM chip.  All I can suggest is that you hit F9 in the BIOS to load defaults


Rich


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.
Community SeniorMod
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Message 5 of 9

Re: Updated BIOS (N1WET56W (1.35)) but still no "Security Chip" option

Hi,

 

Not something I know _anything_ about but IIRC there's a security chip disable option that will make it permanently disappear from BIOS.  Any chance this has been manually/previously selected in the remote machines?

 

From the BIOS simulator:

 

Capture.PNG

 

[edit to correct] That "hidden" comment means hidden from Windows, not BIOS. See down-thread.

Z.


The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.


The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored - questions and answers belong in the forum so that others may contribute and benefit. ... GeezBlog

 

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vonnp
Paper Tape
Posts: 5
Registered: ‎10-10-2019
Location: IT
Views: 172
Message 6 of 9

Re: Updated BIOS (N1WET56W (1.35)) but still no "Security Chip" option

I see.. I can only speculate that the TPM chips are damaged and a hardware fix is necessary.

Still, thank you very much!
vonnp
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Posts: 5
Registered: ‎10-10-2019
Location: IT
Views: 169
Message 7 of 9

Re: Updated BIOS (N1WET56W (1.35)) but still no "Security Chip" option

Hi Z,

 

Thanks for your reply. 

 

If I disabled that option, the "Security Chip" menu will still be visible in the BIOS menu. We have found remote machines that have the "Security Chip" menu and that option set to "disabled".

 

The thing that happens is that the computer won't find a compatible TPM in order to encrypt.

E.g.

800px-Tpm.msc.png

 

 

vonnp
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Message 8 of 9

Re: Updated BIOS (N1WET56W (1.35)) but still no "Security Chip" option

**or absent
Lenovo Staff
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Message 9 of 9

Re: Updated BIOS (N1WET56W (1.35)) but still no "Security Chip" option

There is not any option to permanently disable the TPM.  If the BIOS setting in Security -> Security Chip is Disabled, it means the OS will not see the TPM.  So you have to enable the TPM in BIOS Setup so that the OS can use it.  If there is not any BIOS setting about Security Chip then it means the system does not have a TPM.

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