So i was booting up my pc then i heard my fan was kinda loud and i saw how dusty it is.. So i decided to clean it it a soft brush.. I also clean the fan for my grapichs card.. After i was done cleaning i tried to boot it up but the monitor is just displaying the no signal logo.. So i opened my pc again and reseated both my ram and firmly attached all the other pieces back. But still my monitor has the no signal logo.. I cleared my bios by removing the cmos and it worked my pc booted up and displayed everything.. But then as i was rearranging my pc.. I unplugged the HDMI from the pc and when i plugged it back in it displayed the no signal logo again.. My graphics card is only 6 months old so i don't thin it's the problem..