RAM works, checke every single wire) display doesn’t receive any signal, mouse and keyboard as well) video-card’s cooler works) it stopped working after I were unplugging my old 8x1GB RAM and changed it to 8x2 GB(both new) also where unplugging video-card and hard drive just to take photo of it) bought new hard drive, but it doesn’t workfor some reason as well as with old one)