According to your description, I suggest you refer to the following information:
1. You can keep clicking the F 10 key to enter the bios when starting (or restarting):
A. If the display in the bios is normal, it is recommended to update the graphics card driver. If necessary, you can back up the data and reinstall the operating system.
B. If the screen problem in the bios is still related to the hardware, it is recommended to contact the Gold Service Center to repair the hardware-if possible, you can try to confirm with an external monitor. After switching screens, if the external monitor displays normally, it is generally a notebook screen problem; If the external monitor also has this situation, it may be related to the graphics card or motherboard. The specific situation requires further testing and judgment by the on-site engineers of HP Gold Service Center.
2. For how to download the driver of the corresponding product from HP official website, I suggest you refer to the following official documents:
/zh/support-drivers/e support/as CPPS . html
I hope the above reply can help you.
If the above information can't solve your problem, you can log on to www.hp.com.cn/chat,, the online chat room of HP Network, and ask an online engineer to help you solve the problem further. More product information is available in www.hp.com.cn/800..