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When I tried booting my device today, I got to the BitLocker Recovery. After entering the key my Surface Pro 3 booted up normally. However, when I rebooted the device I got again into the BitLocker Recovery asking for the key. I was able to stop it by pausing the BitLocker, however now my device isn't encrypted anymore. I cant resume the BitLocker anymore as I get the error: "A compatible Trusted Platform Module (TPM) Security Device cannot be found on this computer."
In tpm.msc I get: Compatible Trusted Platform Module (TPM) cannot be found on this computer. Verify that this computer has a 1.2 TPM or later and it is turned on in the BIOS.
However in my BIOS the TPM is enabled! (Even tried to disable and enable it)
When I activate in the device manager "show hidden devices" I get "Trusted Platform Module 2.0", when I click it I get "Currently, this hardware device is not connected to the computer. (Code 45)"
There have been no Updates to Windows, nor new software installations/software updates!
Thanks for your help, Michael
Have you performed the decryption process? You will want to do that before you proceed, so much so, I refuse to provide the solution until that happens. I have a very specific reason for wanting you to do that. I am attempting to avoid you losing your data by waiting. – Ramhound – 2017-03-20T19:27:19.587
When was the last time the firmware was upgraded on the machine? – Ramhound – 2017-03-20T19:30:06.973
Last firmware update was installed on System -1/30/2017 – Michael – 2017-03-20T19:35:36.360
@Ramhound I just started the decryption process, however it looks like that takes some time :) – Michael – 2017-03-20T19:38:41.213
Yes; It will take awhile, but you cannot solve your problem without data loss if you don't first disable Bitlocker, because it will involve removing the TPM hardware in device manager and/or turning off then enabling the TPM module within UEFI. – Ramhound – 2017-03-20T19:40:50.160
It's now decrypted! – Michael – 2017-03-20T21:59:51.463
Can you explain me the further steps? – Michael – 2017-03-21T20:44:08.150
I think @Ramhound intended you to delete the TPM in Device Manager, then reboot into the BIOS and disable and re-enable it, then continue the boot. – harrymc – 2017-03-23T08:35:43.650
The problem is, that the TPM is not visible in the Device Manager! And I have already done the disable & re-enable part without success. – Michael – 2017-03-23T10:01:44.620
Did you have a windows update before the last reboot ? It may have broken the TPM detection on your surface. – Neil – 2017-03-23T11:00:20.063