If your laptop plugged in not charging hp then follow below step to fix...........

A dead adapter could be the reason for your laptop, however,

Disconnect laptop power
Remove battery
Plug cable again without[list=][/list] battery
then check laptop if it starts working
It doesn't then there is a fault in laptop else the problem may be inside the battery

Here if you are unable to fix it then you can also contact customer support for manual help or live chat support