RB850Gx2 is not starting

i am using router board RB850gx2 , suddenly the routerboard is not booting , the lights of ethernet port are Continuously blinking,I was tried to connect the router to my computer by Ethernet ports but the port is not stable they are constantly turning on and off in every second, before this problem when I connect the router to the power ,every time it was made some sound but now it’s not ,I also tried to restore the router through press by reset key but nothing happened , any solution for this problem?

I am not even going to try read the OP in that font format