Lexis breaks my windows boot manager

Hello, I bought lexis to mod GTA. Now the install was pretty easy except that when I went to restart my PC, I got a black screen saying that there was no bootable device found. So I had to boot to USB and rebuild my windows boot manager which was a huge pain. I am scared it will do it again and the discord mods are not helpful at all. They delete my tickets as soon as I put them in.

Anyone else having trouble with installing lexis?

Any advice for a struggling modder?