I bought new parts for my pc (new ram, cpu and motherboard) but before I put the parts into my computer I wiped my hardrive of all the files drivers everything ect. I then put in all of my new parts And hit the power button. Everything in my computer powered on and all led’s where on and fans where spinning. I then plugged my hdmi cable into my graphics card firmly so it wasn’t hanging lose or anything. But my monitor still says no signal. And at this point I’ve lost hope because I looked through countless videos but can’t find a solution. Can someone please help me out.