New
#10
Hello Bo, :)
It's good to hear from you again.
The Windows 10 Update Assistant will check to see if your PC is able to install the latest version of Windows 10 first. If any issues are found, it'll let you know and not proceed to update if they may prevent a successful update.
If the download is interrupted, you will most likely need to start over again. Once downloaded, you should be good to go though.
If you lose electricity during the update, then the update could fail or pick up where it left off when the PC powers up next. It's a 50/50 chance, but no guarantees. There's also a chance that the installation will be completely corrupted resulting in having to do a clean install.
Since you do have unreliable power at times, it would be best to back up anything you do not want to lose first to be safe.