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Venue 11 pro 7140, BitLocker TPM PINs, and BIOS A7
I was hoping that BIOS A7 would enable me to protect my BitLocker key with a TPM PIN (password), but when I click "Turn on Bitlocker," my startup choices are still only "Insert a USB flash drive" and "Let BitLocker automatically unlock my drive," even with BIOS A7.
My "Require additional authentication at startup" group policy is set to "enabled", with everything set to "Allow", and I completely decrypted my drive and am now trying to encrypt it.
I have the slim keyboard connected.
In BIOS settings / Security, TPM Security is disabled, and PTT Security ("firmware TPM 2.0 function") is enabled. Is that a problem?
Has anyone gotten Bitlocker TPM PINs to work on a 7140, and if so, can you tell me what I need to do? Thanks.
tablets4fun
26 Posts
0
July 8th, 2015 12:00
OK, i have gotten this to work. I just needed to set some more group policies:
command-prompt / gpedit.msc / local / computer / admin / windows / bitlocker / op sys drives
enable "Enable use of BitLocker authentication requiring preboot keyboard input on slates"
enable "Allow enhanced PINs for startup"
It works with the bare tablet with the on-screen keyboard, and it works with my slim keyboard - Yay!
The on-screen keyboard, while functional, is embarassing - it's very small, and its crude design and fonts give it a 1980s feel.