Hi,
I was helping my brother build an new PC. After powered up, no video output from pc to monitor. We noticed only his keyboard's LED turned on but the mouse did not. We checked all the memory by placed them one by one on the motherboard, we tried with different video card but to no joy. We checked 24 pin and 8 pin connector all was good so I took off the CPU cooler I believe the CPU had no power because the thermal paste did not melt and spread. I don't know if his motherboard bad or the CPU. Please let me know what do you think is the issue. Sorry for my English.
Here are the components- I7 5930K, MSI X99 SLI PLUS, Crucial Ballistix Sport 16 GB, Corsair HX1000I PSU, GTX 980 ti.