Article 4TZAS [SOLVED] Grub seemingly broken/missing, cannot boot from live USB

[SOLVED] Grub seemingly broken/missing, cannot boot from live USB

by
Vertruc
from LinuxQuestions.org on (#4TZAS)
Hello everyone :hattip:

So i got an old computer from my father, he had installed Mint on it but i wanted to try other distros to see if any would be faster or easier to use. After trying several, installing them alongside Mind, i decided to stick with Mint. So i cleaned up the partitions were the other distros were and (obviously) did something bad, namingly broke Grub in some way (i think). The next time i booted the laptop, it welcomed me with this screen: https://i.postimg.cc/3w3R4rP8/IMG-20191111-123525.jpg

I tried to repair Grub with a live USB, but couldn't get any to boot ! everytime the computer welcomes me with this screen. I tried using different live distros, tried changing from Unetbootin to MultibootUSB... nothing worked.
EDIT: forgot to say i also tried forcing boot from USB devices first through BIOS, didn't work either.
I found this topic here which could be related to my problem, but i'm not sure. Also this one, i tried the solution tetloose suggested there, but it didn't work either.

Any idea of what's happening and how i can fix it ? :scratch:latest?d=yIl2AUoC8zA latest?i=Qxvy8pTKDBY:3qdIb5BODJg:F7zBnMy latest?i=Qxvy8pTKDBY:3qdIb5BODJg:V_sGLiP latest?d=qj6IDK7rITs latest?i=Qxvy8pTKDBY:3qdIb5BODJg:gIN9vFwQxvy8pTKDBY
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