[XPS 9560] TPM module lost after upgrade of BIOS to 1.8.0/1.8.1

Discussion in 'Dell XPS and Studio XPS' started by allthebest, Mar 23, 2018.

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  1. allthebest

    allthebest Newbie

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    Hello All,
    After upgrade to 1.8.0 I have lost the TPM module. It is no longer seen in BIOS (should usually be seen under Security). Bitlocker has stopped working as a result as well. An upgrade to 1.8.1 did not help either.

    Have you guys faced such a problem before?

    Cheers,
    Allthebest
     
  2. GoNz0

    GoNz0 Notebook Prophet

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    shut down, then hold the power button for about 30 seconds, the battery light will start flashing, sit back and wait for the BIOS to reload the defaults, I had to do this as BIOS thought I had no battery or AC connected after 1.8.0
     
    allthebest and pressing like this.
  3. allthebest

    allthebest Newbie

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    Thanks GoNz0.
    Care to explain? You mean you opened up the laptop, removed the battery (maybe the RAM as well)?
     
  4. GoNz0

    GoNz0 Notebook Prophet

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    I did explain, just follow what I said. o_O
     
    Papusan and pressing like this.
  5. allthebest

    allthebest Newbie

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    Sorry, had difficulty to understand that sentence:
    "I had to do this as BIOS thought I had no battery or AC connected after 1.8.0"
     
  6. GoNz0

    GoNz0 Notebook Prophet

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    hold the power button for about 30 seconds, the battery light will start flashing, sit back and wait for the BIOS to reload the defaults.


    That isn't hard to understand though?

    Sent from my SM-G920F using Tapatalk
     
  7. lesz

    lesz Notebook Consultant

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    Let me ask a couple of questions to make sure I understand what you are saying by reloading the BIOS to defaults.

    First, when you say that the BIOS is reloaded to defaults, are you saying that the computer, after doing the "power button for 30 seconds" procedure, will end up with the BIOS version that was installed when the computer was new?

    Also, would there be any point to reloading the BIOS to defaults every time before upgrading to a new BIOS?
     
  8. _sem_

    _sem_ Notebook Deity

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    No no no, BIOS remains the latest version, just its settings are reset to defaults. You may have to change something if you have changed it before (like SATA mode to AHCI if you were not in default RAID).
     
  9. lesz

    lesz Notebook Consultant

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    Thanks for that clarification.
     
  10. allthebest

    allthebest Newbie

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    Strangely enough the Shutdown+30 Second Power Button does not work on my XPS 9560.
    I tried the Ctrl+Esc+Insert AC Adapter which led me to option for BIOS reset. But that did not work either. Is there any other thing to try before I contact the Dell guys (which might lead to a MoBo replacement)?
     
    Last edited: Apr 2, 2018
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