How can i function my mikro Tik 450g router when it malfunction state?

for RB450 there are 2 ways for repair it but first we must check if it function and their light is working or not

if no so there are no solution for it we may take back to the seller for replacment

but if they were working so

first we try to reset configuration for it

and if it not working

try to install a new OS with netinstall 

Simple reset the router to the default state

I tried many way but the result ultimately 0

you can use netinstall to try installing new OS in it.