Update the specs in the "My Computer" section:
System Specs - Fill in at Ten Forums | Tutorials
In the left corner below in your post you find 'My System Specs'.
After clicking it you can find a link a little below that says 'Update your System Spec', click on this link to get to the page where you can fill in your system specs.
System Info - See Your System Specs - Windows 7 Help Forums
Include PSU. cooler, case, peripherals and anything attached to the computer by wired or wireless (mouse, keyboard, headset, printer, xbox, USB wireless network card, etc.)
Th computer is using 1709 and has failed automatic upgrades.
Find two flash drives that you can format (> or = 8 GB).
Create two Windows 10 iso:
a) Windows 10 1709
Windows Download - #1 Windows ISO Download Source
Microsoft Windows and Office ISO Download Tool
TechBench by WZT (v4.1.1)
b) Windows 10 1809
Download Windows 10 ISO File | Tutorials
Download Windows 10
Perform an in place upgrade repair with the Windows 1709 iso.
If that is successful it should fix scannow and restorehealth problems.
Then perform an in place upgrade repair with the Windows 1809 iso.
Before performing the in place upgrade repairs:
a) check the drive with HD Sentinel (free or trial version) and chkdsk /r /v
b) place the computer in clean boot
Perform a Clean Boot in Windows 10 to Troubleshoot Software Conflicts | Tutorials
c) uninstall all non-Microsoft antivirus, firewall, and drive encryption software
d) post an image of disk management
Disk Management - How to Post a Screenshot of | Tutorials
e) open device manager > click view > click show hidden devices manually expand all rows > look for any row displaying a yellow triangle with black exclamation mark or unknown device > post images into the thread
f) disconnect all cables for the non-Windows drives or remove the drives from the computer
If there is a successful in place upgrade repair with Windows 1709 but a failure with 1809 then open a thread in the Installation and Upgrade forum with the results of setupdiag:
SetupDiag | Microsoft Docs
Installation and Upgrade - Windows 10 Forums
If all of the above work then you are set.
If all of the above fail then plan a reset save files (save files, install drivers and applications) or reset save files equivalent.
Reset Windows 10 | Tutorials