Why can't I run Solus OS?

I am trying to run **SolusOS** on my computer for a few days but after I choose it on my pendrive it just show a 5 sec countdown and then nothing happens, just a black screen with a cursor blinking. I searched on internet and some people are having this trouble AFTER installation too, but in my case it doesn't even start the live system, I tried after pressing Alt + F1: sudo systemctl stop lightdm sudo systemctl start lightdm sudo startx