According to your description, I suggest you refer to the following information:
Contact information of HP Gold Service Center (Repair Center) can be inquired through the following official inquiry links:
/zh/support-drivers/e support/as CPPS . html
If you have any other questions, you can visit the online chat room of www.hp.com.cn/chat, HP Network and ask the online engineer for advice.
If it is inconvenient for you to consult your question online, you can also call 800-8 10-3888 (mobile phone dialing is not supported, please use fixed line or PHS) or 400-6 10-3888 (you can call by mobile phone) for consultation.
More product information is available in www.hp.com.cn/800..