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09-01-2018 07:27 PM
09-02-2018 02:25 AM
If you have any warranty remaining I would contact HP to enquire about warranty service.
It is possible that both the power adapter and the battery are bad, though this feels a rather unsafe and unsatisfactory hypothesis because it involves two separate failures. That said, they are both the components most likely to have issues.
The system is around three years old, so the battery may well be rather tired if it is an original part. Power adapters do not always fare well as they age; they tend to run rather hot and are designed with fairly slender margins to keep the adapter small and light.
If you have access to another power adapter, it is worth trying that in case the original adapter is part of the problem. If you run without the battery then that is totally out of the equation.
It may well be that the true root cause is nothing to do with power. I assume that you've run the HP Diagnostics and no errors are reported there. If you have nothing else to lose (i.e. you have no warranty and the system is otherwise unusable) it might be worth opening the system to reseat the memory, hard disk/SSD and any other socketed components. It would also be worth cleaning out the fans - a sudden shutdown might have a thermal root cause.
09-02-2018 08:14 AM