Question Laptop will not run on battery ?

jblackmd

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Mar 20, 2018
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Laptop Model: Dell Latitude E6430

OS: Windows 10

I have been dealing with this issue for about a year. The computer runs fine on the adapter, which is a Dell product. Most of what I read pointed to a battery failure, despite the fact that the battery health reads good. But it is not a Dell battery, so I replaced it with a new Dell battery but the issue persists. If I start the computer and unplug it when it is logged onto Win 10, it will work for maybe a minute and then it locks up. It is noteworthy that the computer runs on battery if I am in the BIOS, or Safe Mode. It works just fine in those.

I used the extensive Dell hardware diagnostic that shows no problems. I have tried removing the power supply and battery and pushing the start button to discharge it. I have uninstalled and reinstalled the Microsoft ACPI-Compliant Control Method Battery in device manager. I updated the BIOS. I have installed the Dell Power management app..

What gets me is that it runs on battery fine in Safe Mode, so I am thinking it must be some driver or process that is not turned on in safe Mode, but I am a loss as to which one it is. Any suggestions would be appreciated.
 
Since it seems to be related to something you have installed, because it's fine in Safe Mode, I would try a Clean Boot of WIndows.

First uncheck any third-party services that you don't recognise or where you don't know what they do. Be prepared for things not to work however! Work your way through these third-party services, disabling each of them (or use a binary search technique) until you locate those which cause the lock-up on battery.
 
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Boot the machine with a Live Linux USB distro (Linux Mint for example) and see
It runs OK in Safe Mode so this is probably unnecessary.

That it's fine in Safe Mode but not with a Clean Boot disabling all non-Microsoft services is a concern. Did you also disable all auto-start apps (via Task Manager Startup Apps)? If not then please do that, it could be an auto-starting app that's at fault.

If it still fails then the issue might be in Windows. Safe Mode loads a stripped-down version of Windows, not the whole thing. Clean Boot, on the other hand, loads the full Windows system. Open an elevated command prompt and run the following commands, one after the other...
Code:
dism /online /cleanup-image /restorehealth
sfc /scannow
Both commands will take a while to run and both show a percentage complete indicator. The dism command may appear to stall, but do wait for it to finish. If either command reports errors found that could not be corrected then your Windows system is corrupted.

Let us know how that goes.