E5550 - Bitlocker not working. Black screen

Hi,

I'm trying to get bitlocker to work with windows 10 on a E5550

TPM is activated an owned (at least status is okay)

Installed Windows 10 on a clean MX200 ssd and updated the  BIOS, Firmware of the ssd but all I get is a black screen during the first boot after the first bitlocker boot.

I checked the graphics driver and this seems to be the latest according to microsoft.

I installed a couple of P3800 using the same procedure and those machines work.

Anyone know how to get bitlocker working on a E5550?