I was using Fedora 40 and all of a sudden it stopped working, it takes me to a selection screen where there is fedora 39(i originally installed that version the it was upgraded) i select it it says booting and then a black screen, i had also zorin in another hard drive and the same happens, i tried booting from bare metal with a usb and the same happens but it takes me to a prompt that says boot: and i can write stuff.
There could be an issue with those things. You could try using a different USB stick to eliminate the stick, different USB port etc maybe try a disc instead of a USB stick if possible