There is a guide online for fixing it, https://www.youtube.com/watch?v=5vvvaWbMgkI
sometimes errors like that can actually come from something like a rootkit that was badly programmed. Try doing as the video says if that doesn't work run download tdskiller, install it, and then update it. It is also possible that you have something deep within your systems mbr. I would install malwarebytes free edition, as well as microsoft security essentials.
If all that comes back clean run the bitdefender iso