Battery light blinking orange, white and off when plugged into power, won’t boot

[autumnflower]

This is a 3 year old laptop now and I’ve never had battery problems until today. When I plug the AC adaptor in, the battery light turns orange, turns off again, and then turns white for a very short time before turning orange again. I can’t find mention of this pattern on forums or in any online manual. I know it isn’t an adaptor problem, because it happens with multiple adaptors that both charge a different laptop normally. 

The laptop also won’t boot (whether plugged into power or not) and pressing the power button has no response. I’ve attempted a hard reset with no success, and because it won’t boot I can’t run any battery diagnostics. 

Does anyone know what these lights mean?

[Echo_Lake]

@autumnflower
Thank you for posting on the HP Support Community.

This sounds like hardware related issue with the computer as it's not powering on. 

I would request you to reach out to our Support and our Support Engineers should be able to check the available service options in order to diagnose the computer physically. HP Support can be reached by clicking on the following link:  www.hp.com/contacthp/

Note: Disconnect all the connected devices from the computer including power cord and try to turn it back on after few hours sometimes this fix the issue. 

Please feel free to contact us here anytime you need any further assistance. Please click “Accept as Solution” if you feel my post solved your issue, it will help others find the solution.