after select packages when i press continue (Y) it's stack and keyboards lights are blinking. and i can't continue setup. Please i need your urgent help. thanks. ROS version : 3.22.

why not install a new version like RouterOS v3.30?

i tried but same problem

see if your PC supports booting from network, if yes, check Netinstall, maybe your CD drive is SATA and has problems with booting ROS installations.