Notebook Hardware and Upgrade Questions

I have had my Spectre x360 13-4003dx for about 5 years and it has been a perfect laptop up until a month ago.  I plugged the laptop in to get a charge and it did not charge.  The battery indicator showed it charging for a few seconds then stopped.  I immediately assumed it was the battery, so I purchased a new one and the symptoms were the same.  I ran a diagnostic on the new battery and it said it was a blown fuse.  I really didn't think that was accurate, but thought I would try a third battery and once again it would not charge. 

I have always be a diehard HP customer at home and at work.  I purchased a HP laptop for my wife a year ago.  I work in I.T. and purchase HP C-class blade servers and HP ENVY Laptops for our user population.  We have had a handful of battery failures (swelling) at work, but no problems with the motherboards.  So, I was really surprised to find that there seems to be a major issue with the motherboards on theses Spectres.  There are hundreds of posts with people having this same problem and HP only seems to be helping a few people who no longer have warranties.  I will probably have to start looking at other hardware at work if I start seeing these type of failures and nothing being done to help.

Again, I have tried about everything I could find in all of these forums and nothing has helped.  Therefore, I am almost 100% certain that I am also experiencing problems with my motherboard.

- new battery X2 - nope

- new charger - nope

- updated the bios - nope

- held down the power button for 60 seconds after the charging cable was removed to reset - nope

 - remove 'Microsoft ACPI-Compliant Control Method Battery' from device manger then reinstall driver - nope

- power reset by disconnecting everything, removing battery and holding power down - nope

- factory restore - nope

- letting my battery die completely then recharging - nope & was the worst suggestion.  Now it won't even power up without the charger; whereas, prior I could at least move it from one room to another.

I'm open for additional suggestions if anyone has something I missed.

Thank you,

DM