MY probook 4530s is doin the same thing, laptop will not reconize the power adapter and only wants to work off battery, battery died and could not recharge the unit. i had taken the battery out and still nothing. so then i unplug the
power to and plug it bake it and it work. after booting to windows i put thebattery back in and it say my battery is dieing. so it does not know that the power adapter is plug in when the battery is and will not charge. step 2 that i decided to look into is to see if the bios needed to be updated , i started the bios installer and it told me that the power adapter needed to be plug in, but the battery is out and the power adapter is what powering the unit. .
Seems to be a problem with Bios not reconizing that the power adapter is plug up and will not charge the battery, alson if you plug in the battery and then take it out while the power adapter is plug up it shutdown , does not reconize the power dapter. if you want toget the unit to come on so you can use it untill you get it fix take battery out and unpug power adapter. then plug the power adapter bak up and it should come on. to get it to charge you have to keep puting the battery in and out while windows in loaded and sometime the orange charge light will come on. but once you unplug the power adapter same issue. the bios chip firmware either need to be reinstaled and updated or you bio chip had a defect in it. which HP does know about. your pc is still under waranty, call them asap they will send out a box to have the unit fix without now charge. just make sure ou bak up all of you data or remove hard drive is it does not voide the warenty