Im not a native english speaker so, if i miss-write, please dont be harsh. So i have this r9 270x which doesn let pc's boot, i have tried a lot of things but i dont know what to do. I have tested this graphics card with a fx 8350/sabertooth 990fx system and an i5 6500/h110m-hdv system but the only thing that happens, is that when i try to turn them on all the fans and lights in the pc turn on by like a moment, is not even a second and then turns off, then i try to turn on the pc and nothing happens, i have to switch the switch on the psu for seconds before i can try to turn on the system again just to find the same result, the system turning on like by a fraction of second and then turning off. Ihave tried a lot of power supplies, an evga supernova 850, cm silent pro m.2, kcas 700w, corsair vs 400. Also i tried the systems with gtx 950 and 980 ti and they boot properly. Im a used parts seller so i have no problem to test multiple variables, so i dont know why this graphics card doesnt even boots. Also if i remove the energy cable of the graphics card, the system boots :/