Because your question contains less information about related questions, we can't reply according to your question. I suggest that you can record the serial number of the machine, open the following website, select the product type you use (such as notebook products), and then click login chat room for consultation: /chat.
If you want to contact the service center directly, you can check the contact information of the nearest HP Gold Service Center through the following website:
/zh/support-drivers/e support/as CPPS . html
More product information is available in www.hp.com.cn/800..