When watch) tv, my break) my computer. while complain) about the noise, switch) on the television поставить в правильную форму

When I was watching TV, my brother broke my komputer

While she was complaining about the noise, he dwitched on the television

When I was  watching  TV, my brother was breaking my computer.(одновременно происходящие действия) Кщгда я смотрела телевизор, мой брат ломал компьютер

 возможно и так:

When I was  watching  TV, my brother broke my computer (Когда я смотрела телевизор, мой брат сломал компьютер)

While she was  complaining  about the noise, he  switched on the television