On 12/12/2020 8:47 PM, Arlen Holder wrote:
snip...
Have you ever had a working PC that wouldn't go into the BIOS mode?
o https://i.postimg.cc/GpkgdmxT/cmos01.jpg Won't go into BIOS

How did you resolve that issue?


Yes. More than once. Usually it is a matter of the BIOS mode being
dependent upon a particular keyboard connection. In old MBs it was not
uncommon for them to watch for signals from PS2 keyboards only. Any USB
keyboards would be ignored until after the boot and some driver or other
was loaded. I have one more modern MB, a "Genuine Intel" of some sort or
other which ignores input from a wireless keyboard/pad until after boot
even though the KB's adapter is plugged into a USB port. If I plug in a
"real" USB keyboard of any description it will work during boot. Luckily
the MB in question is willing to overlook the missing keyboard and boot anyway.

Oh, and yes, I've had a couple of mystery MBs were I had to play guessing
games about which key and precisely when to press it to achieve BIOS.

--
Bodger's Dictum: Artifical intelligence
can never overcome natural stupidity.