acpi compliant control method battery driver windows 8.1

Device drivers fail intermittently and inexplicably without any apparent reason. It's possible to associate ACPI-Compliant Control Method Battery errors with corrupt PC drivers. On the other hand, installing incorrect Motherboard drivers can cause a myriad of issues including PC crashes, sliuggish performance, and overall system instability. With the second ACPI battery disabled in Device manager, the taskbar icon no longer lists a 'battery 2: not present' as it did in the screenshot above.Increased features from your ACPI-Compliant Control Method Battery, better hardware performance, and interoperability can be realized from correct driver updates. Seems until recently the battery report was correctly reporting on battery #1, but is now by default reporting the condition of the (not present) battery #2. It is probably relevant that both the affected machines are capable of supporting a second battery. Battery reports now show the details of the installed battery. I found a workaround to get the battery report working normally again - disable (not uninstall) the second ACPI battery. Removing both in device manager, then scanning for hardware changes would allow one battery report to be created that could see a battery, but generating any subsequent ones would say 'no battery installed' again. All other battery functions still work normally, the taskbar correctly shows the charge and time remaining (or time to full charge). I don't know exactly when it stopped working, but now in 1909 it fails to see any battery. The battery report had worked normally a year ago under 1809 (I have a saved battery report from back then). Everything else battery-related was still working normally. The Battery usage showed a blank chart, that section and the Battery Capacity History both showed a list of dates and times, but without any battery data.

now says that no batteries are installed. Generate Battery Usage Report in Windows 10 This hasn't been a problem until now, all battery-related functions worked normally.

Google shows this to be common, both for Dell and HP laptops. Both the E4310 and E7440 list the 'Microsoft ACPI-Compliant Control Method Battery' twice in Device Manager (both working normally), uninstall them and they both reappear on a restart or a scan for new devices. I have several Dell Latitude laptops, E4310, E7270 & E7440.

Acpi compliant control method battery driver windows 8.1