Stuck on Blast from the Past

I have been trying for days to get past a part in the story line. I am supposed to fix or replace the broken computer. However, my sim ( at the time of the story line) had the high end unbreakable computer. So it cannot be broken. Is there a way to restart the story line from the beginning or move past this portion of the story.  I have also tried buying a new cheaper computer, turn it into parts and then rebuy the same computer but it did not solve the issue. Any help or suggestions would be greatly appreciated. I do have mods running on my game. I shall not name them but if I need to remove them I shall in order to run the story line.