According to your description, I suggest you refer to the following information:
1. As mentioned in your problem description, no matter whether you connect the battery or the power supply alone, the white light flashes, then your problem is related to the motherboard hardware;
Second, it is suggested that you connect an external power supply separately to test whether there will be power failure and shutdown.
1. If it doesn't appear, your battery is likely to be faulty;
2. If the power is cut off or turned off, your power supply will probably fail.
Thirdly, regarding the hardware problems in the above problems, I suggest you contact the maintenance center to help you deal with them.
Information of Beijing Maintenance Center is as follows:
North D528 0 10-82552799, 5th Floor, Hailong Electronic Building, Zhongguancun, Haidian District, Beijing
Huaye Oriental Rose 0 10-857 10677, No.25, Li Yanjing Middle Street, Chaoyang District, Beijing
Chen Rui International Center, 200m east of Changhong Bridge, Chaoyang District, Beijing F1-90161665438.
88-14010-67130608 Guangqumennei Street, Chongwen District, Beijing
A0 1 1 Room 0 10-8269803 1 (notebook support) /82697566 (printer and desktop support), 2nd floor, Dinghao Electronic Building, No.3 Haidian Street, Zhongguancun, Beijing.
Block B, Haojing Building, Zhichun Road 108, Haidian District, Beijing/Room 0 1005/KLOC-0-82669818
No.55, South Road of Zhongguancun Academy of Sciences, Haidian District, Beijing 0 10-62509399
A14L5272304142/43, Chengming Building, No.2 Xizhimen South Street, Xicheng District, Beijing
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..