No Display when pc booted

[ImAlek]

I've just built my first pc, I believe I've done everything correctly. When I boot it the fans start spinning. But the monitor doesnt turn on...

[opelly]

I would start with double checking all the connections. Re-seating the RAM, triple checking the graphics card if seated properly, checking if the power to the Morherboard and GPU are firmly secured. I would try a different HDMI cable, or a different video out port on your GPU. If none of these things produce a different result, it could be a dead CPU. I had a similar problem with a system a few weeks ago and turns out the CPU was dead on arrival. Where did you buy your parts? 

[ImAlek]

I got the parts on amazon. I dont have a gpu I've got a amd ryzen 3200g. You mentioned a motherboard cable? Where abouts is that one on the board I think I plugged them all in

[Moonzy]

can i know what cable is this?