Windows 10: Error 0x80070780 while trying system restore trough Windows Live CD

Hi,
While trying system restore from a Windows 10 Live CD, I'am getting this 0x80070780 error for the file "D:\Users\Me\AppData\Local\Packages\AcerIncorporated.AcerPortal_48frkmn4z8aw..." (can't see complete name because the error window isn't resizable). I already searched for this file using command prompt and it seems to be absent from the "Packages" folder.
Windows doesn't start, even in safe mode. I can see the spinny load icon below the acer logo and then it disapears and instead of the log screen appearing, it just stays black.

I already tried chkdsk D: /r /f /v, it didn't find any corrupted file but the last line is "failed to transfer logged messages to the event log with status 50".

"sfc /scannow" returns "the windows resource protection could not perform the requested operation"

"DISM.exe /Online /Cleanup-image /Restorehealth" returns "dism does not support servicing windows pe with the /online option"
As suggested here, I tried dism.exe /image:\ /cleanup-image /revertpendingactions but after it ended successfully and after restarting my laptop, sfc /scannow didn't work better.

The laptop is an Acer Aspire-5 A515-51G-8536 with windows 10 familly installed on it. (no other OS installed)

I might have missed some infos, feel free to ask for it.

Thanks in advance for any help,



:)

 

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