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- HPZ420 installed the wrong TPM drivers

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06-26-2021 09:13 PM
Hi I have HP Z420 I was trying to upgrade the TPM drives to 2.0.
I installed the wrong drives I installed HPZ840 TPM 2.0 drivers.
Now the PC keep restarting it self.
How can I undo this if I reset the BIOS would the driver of TPM will disappear?
I can log into safe mode.
Please help.
06-28-2021 12:16 PM
> Now the PC keep restarting it self.
But, you can log into safe mode. This implies that the device-drivers are loaded by Windows, as Windows starts, i.e., not by the BIOS when you power-on the motherboard.
> How can I undo this if I reset the BIOS would the driver of TPM will disappear?
I would not try a complete "reset" of the BIOS, especially not as the FIRST thing that I would try.
However, in BIOS-setup, can you "disable" the TPM, so that when Windows is starting, it does not "see" the TPM hardware? If Windows starts normally, can you "uninstall" the wrong software?
Or, if Windows starts normally, can you use "System Restore" to time-warp your copy of Windows back to a date/time before the incorrect software was installed?
06-28-2021 11:26 PM
tpm is FIRMWARE..........that resides on a separate chip on the motherboard
the tpm updater always checks the current version (by reading a pre done script file) before beginning a update and abbots if the correct firmware is not found. did you mess with the script file?
you might (and i say MIGHT) be able to modify the tpm script file to force a install of the correct firmware
IE--- if tcurrent tpm= xxx.xxxx.xxxxx then use this file xxxx.xxxx.xxx.xxxx