Recently built PC turns on and the fans spin but there's no signal on the monitor. Here's the specs:
Motherboard: Asrock N68-VS3
CPU: AMD FX-4100
GPU: ASUS GeForce GTX 550ti
RAM: Dual channel 4GB RAM
PSU: 400W unknown brand
HDD: 500GB
How are you connecting your pc to the monitor? If you aren't already, try using the vga/dvi port on your gpu to connect it to the monitor. Your GPu probably came with an adapter