Uninstalling and reinstalling power management software:
In order to correct problems with the battery's power management software, follow the steps below.
1. Access the “Device Manager” .
2. Expand the Batteries category.
3. Under the Batteries category, right-click the Microsoft ACPI Compliant Control Method Battery listing, and select Uninstall .
WARNING: Do not remove the Microsoft AC Adapter driver or any other ACPI compliant driver.
4. On the Device Manager taskbar, click Scan for hardware changes .
Alternately, select Action > Scan for hardware changes .
Windows will scan your computer for hardware that doesn't have drivers installed, and will install the drivers needed to manage your battery's power. Restarting Windows will have the same effect of letting Windows re-recognize the hardware and installing the correct drivers.
If that doesn’t fix it, then shut down the computer, unplug all power cords, remove the battery, then depress the power button for 30 seconds. Replace the battery making sure all connections are solid, then plug in the power cord. Hopefully things are good
Hope this helps.
Grif
Today I was troubleshooting my RCA Cambio Windows 10 tablet. The issue was that the battery stopped providing power. It appeared to charge and the machine could give me a battery-charge status, but if I unplugged the charger, the machine was immediately off. No power from battery at all. It would not start up on battery either. I was going to open it up and check the connections, and thought possibly a new battery (despite the report of a charged battery); but first, since we don't keep a lot of stuff on the machine, I decided to do a full reset. While that was in progress, a few times I unplugged, and guess what? It continued to run, meaning it WAS getting power from the battery. But once the reset was complete and I'd created a user profile, I'm back to where I'd been before: battery does not provide power.
I presume this means it's a software or bios issue, but that's way beyond my pay grade. Any ideas?

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