I bought a laptop I used for business purposes in August of 2017.
I left that company.
I filed a new company in the same industry on August 15, 2018. (a little over one year later.)
I am still using the same laptop, and have been since buying it in 2017. This laptop helped me start the new company.
In the Deductions section, it asks:
"When did you buy this asset (or start using it for business?)"
The examples given are a little confusing as to whether I should choose 2017 or 2018 for my circumstances.