Same problem with Acer Switch 11v SW5-173, after 1809 update boot hangs
on logo screen with rotating circle
Boot with F2-Bios .. quit .. boots to windows
Fast Boot disabled and it looks like "Restart" will work,
but when the device enters any type of
energy save mode, it does not boot.
Hard Reset and then Bios step needed to reboot again,
hoping Win will not enter Repair mode
The answer from Acer some posts above is
a kick in the ass for every customer and my conclusion
is to never ever buy Acer again.