Battery failing diagnsotic test

[Anonymous]

Hello 

My 3 year old Notebook today when I started it up went to Preparing Automatic Repair but then does nothing else.

I am aware my battery no longer charges so I use the Notebook plugged into the main power which is fine for my needs. 

I ran a quick and an extensive diagnostic test and both failed straight away due to the battery - message is : Replace (42) Failure id: MBXPL1-86BA9N-COA003 

My question is why is a battery problem causing the machine to not open windows  anymore plugged into mains power? 

Whyy does it need a battery at all if it's connected to the mains?

It's working well enough to start up and run the tests on  mains powee, so why does it need a new battery?

This seems illogical and I am reluctant to spend money on a new battery unless it's going to fix the problem. Sorry if these are silly questions.

Thank you for any help on how I can fix the problem.

Jules

[WAWood]

@Anonymous 

It's a legitimate question -- but there is no clear answer.  Some model HP laptops, and they don't provide a list of the models, simply require a working, none-dead battery to operate, even when plugged into the Mains.

I have an old HP DV6 and it works entirely the same way.  One day I put it away and three days later, the battery was dead, and it would not start -- even on the charger.  So, I bought a battery online, swapped with the dead one, and the laptop started.  Then I swapped with the dead battery and charged it for a few hours.

[Anonymous]

Thank you for your reply Mr Wood.  

I'll nvest in a new battery then and hope it does the trick.

I have given a thumbs up but not accepted as solution for now until I've given it a go. I will come back and update then, 

Thanks again.  

Jules

[Anonymous · Accepted solution]

The new battery made no difference other than making me £30 poorer! 

Speaking to the Windows community the issue seems to be there, hence the stop code error. 

Closing question.