i have prepared batter for brownies …and now i have checked that oven needs to be assembled :((…is there any way to make brownies in microwave ??? i feel like crying 
You might be able to make it in a toaster oven but not in a microwave oven. Are you in Pakistan? Do make an effort to get your oven assembled.
Re: Brownies
u could have cooked it on stove
here is the method
take a wok heat it for 5 minutes on high flame
then put a stand (which is used to keep hot woks on) in the wok and put the mould containing browny mixture on top of it
and cover the wok with lid and keep flame high for 5 minute and lower for 20 minute
and check after 20 minute
it will turn out gudIA