I have a Windows 10 PC (upgraded from Win 8.1) with Bitlocker enabled. The PC has no TPM, so it asks for a long password at every boot. Since today, this doesn't work anymore. It boots into the BitLocker screen where normally I have to enter the password, but the whole screen is blank. It is just a blank blue screen without the input field for the password and the text. Pressing Insert does nothing (this should change the password from little dots to the actual characters usually). If I press Esc, I am asked for the Bitlocker recovery key and after entering it, I get the usual recovery options.
I was able to get the PC to work again by starting a console from this recovery options and running
manage-bde -protectors -disable e:. This disables the password request on boot and the PC boots. Bitlocker is still active on all drives, just the key is stored unencrypted.
While I can use the PC now, this is obviously not a permanent solution. Is this a known problem? Any solution to that?
Is there maybe a way to force Windows to recreate this bootmanager/decryption thing where the Bitlocker Password is input?