Recently I encrypted my main Windows drive with Bitlocker (no TPM, just password), but during the boot prompt to 'enter your Bitlocker password' the computer will shut down at a seemingly random time. As in, the computer starts up, I get prompted to enter in my password, after a few seconds (or sometimes a minute or so) it just shuts down as if someone had pulled the cord out of the back. If you get the password in fast enough, though it boots window fine without any problems.
Specs: I have an i7 4770k, 2x8 GB RAM, Windows 8.1 x64, and am encrypting a 2TB SSHD GPT hard drive with AES-256.
I assume Bitlocker doesn't keep logs of it's pre-boot activity, would that be correct? Has anyone had this problem before or know how to fix it?
And on a side note, anyone know of a good, preferably open-source disk encryption software for Windows 8.1 with GPT?