Question Help me with problems in my first build

[FatandFuriousBoy]

My pc currently has its fans running but my ram led is not turning on and when I plug in my pc to a monitor it’s showing input signal not found
My specs

Antec NX200M

Intel i5-12400f

RX 7600
ASRock B660M DDR4

TeamGroup MP44 1TB Gen 4.0 NVME M.2

TeamGroup 16GB 3200MHz RGB DDR4

Seasonic S12||| 500W 80+ Bronze
Will send $20 steam gift card if it starts running

https://imgur.com/a/lD0ey3L

View: https://imgur.com/gallery/lD0ey3L

 

[FatandFuriousBoy]

https://imgur.com/a/pLgMmT4

View: https://imgur.com/gallery/pLgMmT4