I landed at Ogdensburg, only 115 miles away - so close in Canadian terms
Strange as it may seem, small as it is, Ogdensburg has an Aldi store.
I hadn't seen one of those for ages. I love the chocolate and their American beans.
The only issue you may have is if your laptop is new and you travel outside of Canada with it at a later time.
I know one person who ended up paying tax on a pro camera, because they had not declared it as good to follow.
The chances of this happening are very rare. However I am risk averse, so I would add it to the goods accompanying list (with serial number) and take it with you.
Another option would be, check with the CBSA to see if you can declare it and not present it.