https://support.hp.com/ee-en/document/c01443470
HP force consumers to change their battery (or their still working computer) after the warranty period (often a spare part not produced anymore and at their expense) threatening them on EVERY reboot with a black screen!
There is NO WAY to avoid the notice and the battery replacement can be a difficult job requiring experience and specific tools!
Sign up to stop HP from getting rich by filling third world landfills with hazardous electronic waste!