Incomplete question. However, I provided a brief about Warranties.
Step-by-step explanation:
Note, the term Warranty refers to a legally binding agreement issued by a manufacturer, supplier, or seller to the purchaser of a product with a promise to repair or replace the product under certain conditions (such as when the defect was not caused by the purchaser) within a specified period of time.
Hence, the 3-year warranty package of the laptop been effective immediately implies that Sam is protected from any damage or defect found in the laptop.