Got a problem after buld my pc

[copo_banget]

Hi i have problem with my frist build pc i have connect all the needs and it seems everythig work all the fans are working and the motherboard is lighting as well but when i connect it to monitor its no signal. I am using HDMI cable i tried to put the HdMi to gpu but still does not work. Any ideas ?

 

[vapour]

1. List all rig specs.
2. How many cables are connecting PSU and MB?