Question new build pc wont display and the mouse and keyboard don't connect

banana-acid

Prominent
Mar 23, 2019
7
0
510
i've rebuild my dad's pc because his pc was broken so i replaced almost every component and its booting up but it don't displays and my mouse and keyboard don't light up (what they will normally do). i've searched a lot and it seems that other people have got the same problem but i can't find a solution! have you any ideas?