Holy cow, I wrote a book!
what the difference is between pressing F5 and F8 while
Windows is booting.
I have no idea either.
My strategy was to just mash on the function keys,
space bar, DEL key, anything else I can think of.
Keep pressing them all through the boot process,
and maybe a boot menu will show up.
The F5 hotkey was introduced in Windows 95,
where the boot sequence hotkeys were as follows:
Man, that's an insane number of boot options
all buried behind obscure function keys.
Boy am I glad we got rid of them.
This frees up room in my brain for things like
Beanie Baby trivia.
The next generation of computers boots so fast that
there's no time to hit any of these hotkeys!