17 R5, problems during startup on battery

Dear members, 

I have an Alienware 17 R5 that I have been experiencing problems with booting it up for quite some time. I just cannot get the problem solved and am desperate, so hope someone here can provide me with a solution. I have already searched the internet multiple times for a possible solution, so I have read a lot and also tried a lot. 

As soon as I want to start the laptop on battery (battery is fully charged and still functioning normally), it switches off automatically during startup. I then only get the laptop to turn on when I connect it to power. Once booted, there is no problem continuing to work on battery. This problem at startup also varies in time, sometimes it starts up from the battery with no errors or shutdown, other times it shuts itself down so. 

If I boot the laptop from the power cable, then there is no problem and so it does not shut down. 

Once the problem has occurred, I always check the system log to locate the error. Here I keep getting the error message that the 'xTendUtilityService' could not be executed. The strange thing is that this error message also occurs during boot sessions on battery where the laptop does not shut itself down. So in my opinion it can't be due to that, since the error message thus occurs even when there are no problems when booting via battery. 

All my drivers are up to date, all updates of Windows are installed as well. I have already reinstalled Windows 10 several times (clean install), run the System File Checker several times, set BIOS (1.20) settings to default values, ... 

So I am at my wit's end, as no solution has seemed to help so far. 

Do you have a possible solution for me please? 

Would it help if I would set the factory image back on the system? How can I obtain the original factory image, because when I use the OS Recovery Tool / Recovery Assistance, I can only chose to obtain a clean Windows 10 version (without the Alienware drivers & apps installed on it)? 

Thank you for the help!