I assume that you are dealing with the people you bought it from.
Others will confirm this but you need to get the Lenovo inspected by a third party. You will have to pay for this yourself but they will be liable to pay the third party's feee, if the fault is found to be inherent.
However, it is very important to tell them that this is what you are going to do, before you do it, and give them a chance to reconsider.
Meanwhile, you will have to pay for the inspection yourself.