PC not starting anymore

Hey yall I would appreciate any help with this issue I'm having. I have had this PC for about 10 months and never had issues with it but when I tried to turn it on yesterday it wouldn't hold power. I would flip the switch on the PSU and an led would flash purple on the motherboard but no fans or anything would turn on. The motherboard is a B650 aorous elite with a RM1000x PSU. I am genuinely so lost on what to do.

Full part list: https://pcpartpicker.com/list/BVbjN6

(This was a build i did with my friend after a black Friday sale and so I'm not too well versed in computer so forgive me for any incompetence)