HP 820G3 not turn on

[AhmedSH89]

I have HP laptop EliteBook 820 G3 , its shutdown by itself until I remove battery and re-seat it back ,then work fine ,after few days of use again not start at all ,no LED flashing ,nothing in display, I remove battery then unplug power adapter ,press power button for 30 second , then reseat battery after that its work again ,did somebody face same issue, what is the reason? 

[erico]

If that is the original battery, you must replace it with a new one. I am not surprised that it failed.

The HP EliteBook 820 G3 notebook is from the 2015 model year.

The Maintenance & Service guide (for parts  reference)

http://h10032.www1.hp.com/ctg/Manual/c04887199.pdf

The replacement battery HP part number is 800514-001

Online vendor sources.  The replacement battery is relatively inexpensive.

https://www.google.com/search?q=HP+800514-001&oq=HP+800514-001&gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCDEyN...

[AhmedSH89]

Thank you Erico for replying , I wondered if battery bad ,laptop should work if i remove battery and plug power adapter?

[erico]

The BIOS receives the current it needs to retain day/day and default settings from the battery.

Since you laptop does not start up that means there is already strange behavior.

Since the laptop won't turn on, that indicates that the power adapter is already not supplying the required 12v,  5v and 3.3v rails  that should allow the laptop to start without a battery.

You should consider trying another compatible power adapter.

It a new compatible power adapter does not allow the laptop to boot up, then there are component failures happening that are at the root of the no start issue. 

Not replacing the battery is not going to help anything. 

" if i remove battery and plug power adapter" is going to leave the laptop without any power at all. How would you expect it to start up?