Question about the Nintendo DSi

Hi everyone, I’m new to repairs and I wanted to repair my old Nintendo DSi. In the current state the handheld console is not even turn on. I opened it to see what’s going on and I saw a torn flex cable which goes to the top part of console. Does this damaged flex cable prevent to turn it on?

Oh I forgot, sometimes when I try to turn it on it briefly lights up the blu LED, so there is actually power to the board