Can't find Windows Loader Installer

I've had no trouble before, shut down normally the other day.

Cold boot just now, after BIOS screen, after password screen, next phase,
get the error screen "can't find Windows Loader Installer", it shows the
path statement.

The path statement is to a subfolder in my Download folder, this is not in
my Windows folder, there is nothing in my Download folder that would
effect Windows bootup.

This screen stops the bootup process.

In Task Manager, Windows Loader Installer, run once, and something else, no
other entries.

This computer is not on the internet, recent virus scan was clean.

Advice?

TIA