“岗顶”gangding is a place in tianhe district of guangzhou.there're many electrical product shops and you can get your computer repaired.
电脑烧包:his computer is out of it self . but 烧包isn't always used as this meaning. it much more means waste and squander. you can describe someone :他太烧包了。
作业不能:it might means without his computer he couldn't finish his homework so he have to go to 岗顶