Blast from the past -the setback

Hi! I’m on Xbox and I was doing the quest for week 3 of the event, Blast From The Past “The Setback” and I am unable to complete it or finish the quest. 
I started the quest on the unbreakable computer, Ghostwriter Disappearing Desktop and the quest requires me to repair the computer. But it’s unbreakable!
I tried to get a new computer and break it to repair, and the quest did not complete. I even tried deleting the original computer and nothing.
Please help :(