What to do with dead lenovo g50-80 ci5.?

Hi,I have a dead lenovo g50-80 ci5 Laptop. Which motherboard is dead?Physical condition of laptop is very good because I have used it only one month.New mother board price is half of actual laptop price.

Q1. Is there any other compatible mother board which is cheaper.?

Q2. Should I buy new laptop or just purchase new motherboard?

There is no f****** lenovo support center in my country.

Thank you