Yeah, if you’ve updated Trinity recently, your boot file has gone missing! Be sure to replace it if it’s missing!
Try the following steps to double-check: Start -> Run -> C:\boot.ini
If this comes up with zilch, your file is missing! Please replace it using this file! Please note that this file will only work if your main drive is where windows and the MBR is, otherwise you will need a specific one! And it should also have system, hidden, and read-only attributes set in this particular way in command prompt:
attrib +s +h +r boot.ini
More information from the devs is available here.