I know, this is a pretty common issue but mine is a little different. I cant find solutions on google so I thought the guys from TPU could help me. When I push the power button in front of the case, It turns on, the casing LEDs, the cpu ang gpu fans but what doesnt seem to appear is my display. So I waited for my keyboard to light up since the numlock key lights up when windows starts. But it didnt light up. I already changed the slots of where my vid card is but that didnt work. Also, i have an LED on my mobo that blinks whenever the computer is loading. Also, screen displays "No Signal" on both DVI and HDMI inputs. And even on VGA-DVI. Idk what seems to be the problem.. Would you guys help me? Logs: Cleaned cpu casing Cleaned cpu and gpu including heatsinks Placed new thermal paste on both gpu and cpu (and I know it's just the right amount) And that's pretty much it.