Hello @Nengcs,
You might want to take a look at this document: Battery Does Not Power Notebook or Hold a Charge
It suggests troubleshooting steps to determine if the problem is the battery, the power supply, or the system board.
You might find the answer to your battery/power issue as you work through the steps in that HP support article.
Please test the battery : Testing and Calibrating the Battery (Windows 7)
http://support.hp.com/us-en/document/c00821536
Hope this helps, for any further queries reply to the post and feel free to join us again
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Thank You,
GBL84
I am not an HP Employee