According to your description, I suggest you refer to the following information:
1. If you say "the product number cannot be found in the boot display", you mean the boot prompt "the product information is invalid, and the following product information is missing or invalid when programmed into the system board, system board (00A)- product number". This situation is probably caused by a BIOS problem. I suggest you check the latest BIOS version of this notebook published on HP official website according to the notebook model. If this version of BIOS is not available in the current system, it is recommended that you refresh the BIOS and try.
1. For how to download the driver of the corresponding product from HP official website, I suggest you refer to the following official documents:
/Chat and consult an online engineer to help you solve the problem further. More product information is available in www.hp.com.cn/800..