Green LED lighting up on MotherBoard ASUS ROG STRIX B450-F, but no signal.

[Huber0616]

Hello!
I have a Ryzen 5 2600x and a Nvidia Geforce Gt630 . My motherboard is an ASUS ROG STRIX B450-F.
It has been working well for a month and today I put the pc to sleep. I try to turn it on but no signal on my monitor.

I look inside the case and a green led on my mobo is lighting up. I jumped the CMOS, changed RAM, buy a new source of power, changed thermals on CPU. Nothing else works.

Anyone can give me a help for this? It’s my first time building a pc.

Everything is powering up including CPU and case fans. Keyboard and mouse are fine, GPU fans as well, just no signal.