Hello!
TGC comes from Trusted Computing Group the developers of TPM.
I think the firmware in the TPM chip was not completely updated and that's causing your error...
So first try to update the TPM firmware from a Windows, booted from USB stick.
You can download the firmware update utility from here: [URL]https://support.lenovo.com/us/en/downloads/ds503824-tpm-firmware-update-utility-for-windows-10-32-bit-64-bit-miix-520-12ikb-type-20m3-20m4-81cg[/URL]
If that's not working only swapping/changing the TPM chip will help you.
This is my opinion...Good L...
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Hi!
You can try unlock the bios by dumping the bios chip and post it here : [URL]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/bios-requests-only/78340-surface-4-pro-bios-locked[/URL]https://Hi!<br /> You can try unlock...s-locked[/URL]
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