First time building comp: https://pcpartpicker.com/guide/t2wrxr/modest-intel-gaming-build
PSU fan turns on
Mobo fan turns on
no display :(
Monitor cable plugged into the GPU, not the motherboard?
In order: Double check PSU connections for correctness and full seating, especially the 8-pin EPS power connector from PSU to motherboard, also 24-pin ATX connection. Re-seat RAM and GPU. Disconnect all hard drives and SSD and try again. Pull all but one RAM stick and try it in each DIMM slot, then the other RAM stick. Carefully pull CPU and double check for correct orientation and no bent pins.