On Sat, 2025-10-04 at 11:42 -0600, home user via users wrote:
> I need to do some more BIOS configuration.  But when I push the button 
> on the top of the case, I never see a "POST" screen.  Rather, the F-42 
> login screen appears quite quickly.  I checked the motherboard's 
> manuals.  They say to push the "Delete" key after pushing the power 
> button on top of the case.  Doing that seems to have no effect.  Neither 
> does "Enter" nor "End" nor "F12".

As general info, and seeing how various Linux users will have to
contend with "my keyboard is ignored" for these reasons when trying to
set up a new installation, or get it to actually boot after
installation, despite someone here whinging about an OT post:

Some motherboards only respond to a PS/2 keyboard straight away, their
USB keyboard input emulates the PS/2 keyboard, and may start to do that
too late, or only if some BIOS option is set.  There are often
BIOS options to change this (legacy modes), but you have to get into it
first.  After bootup has started, it's your OS that takes over, and
it's far more flexible.

You may also have to try different USB ports to find the one they do
this with (probably the nearest ones to the PS/2 ports).  And on
motherboards with no PS/2 sockets, you may find they also have specific
USB ports they look for a USB keyboard on at boot time.  If your
motherboard has a mix of USB 1, 2, or 3 sockets, the lowest speed ones
are probably its preferred keyboard ones (yours too, you want the high
speed ports for other things).

If you're fighting to get your motherboard to recognise a keypress
before booting starts, you can try unplugging your HDD/SDD (first). 
You may get more of a chance.

Once you do get into your BIOS/UEFI it's probably a good idea to look
for an option that puts in a boot delay, give it a couple of seconds. 
You may find there's a fast boot option that ignores any user input
before immediately booting the drive.  And motherboards that show a
logo while posting may also be an issue (you can try changing whatever
it does now, to the opposite option).

-- 
 
uname -rsvp
Linux 3.10.0-1160.119.1.el7.x86_64 #1 SMP Tue Jun 4 14:43:51 UTC 2024 x86_64
(yes, this is the output from uname for this PC when I posted)
 
Boilerplate:  All unexpected mail to my mailbox is automatically deleted.
I will only get to see the messages that are posted to the mailing list.
 

-- 
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