I have a Precision T5400 workstation with a working Windows 10 installation. TPM is disabled in BIOS.
I want to enable BitLocker with TPM. However, when I enable TPM in BIOS, Windows will not boot: it keeps loading (rotating white dots on black screen) and will never reach the login screen. The same happens with Windows 10 installation media (USB boot): the installation wizard will only start if TPM is disabled in BIOS. It does not matter if TPM is activated or deactivated: both prevent booting if TPM is in the enabled state.
I have another T5400 and the same happens also on that machine. So I don't think it's a bad motherboard.
I have upgraded BIOS to the latest A11, but it does not help. I also cannot reach safe mode. Everything works as usual once I disable TPM, but then it's obviously not visible in Windows.
Not meaning to be impatient, does anyone have a clue? This machine needs to be encrypted. If the answer is "not compatible", I'll take that, too. We can use PIN instead of TPM with BitLocker. TPM is just more convenient 🙂