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Accessing BIOS/UEFI with keyboard & USB disabled

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Hello. Well, I know all the obvious stuff and they're not options.

I misguidedly disabled USB3 in my Archos Cesium 140's BIOS thinking it 
would help with something, the less said the better. Instead now the 
laptop passes through its opening screens with no way to access the BIOS 
(which will prevent my trying to see if Linux Mint will install once the 
Linux kernel has caught up). Approaching the BIOS from Windows 10's 
recovery options shows the USB slots of course as disabled. There are no 
visible CMOS battery or jumpers inside. The large main battery is 
attached with a connector but also some gummy stuff which ideally I 
wouldn't remove (though I gather it's just reinforcement and a way of 
discouraging people like me from fiddling about?) I did wonder if 
removing the battery for a time would help reset the BIOS just as remove 
a CMOS battery would. It's one of those laptops that are like a tablet 
with built in keyboard - slim, cheap, eMMc hard drive. Should I/ can I 
safely remove the gum and pull the battery connector out for a few 
minutes, or does this gum do other things? (Does this almost clear, not 
quite solid-feeling gummy adhesive have a name? I could do with some for 
something else.)

But my main question is, surely there are key combinations that will let 
me get into the BIOS, surely there's a way? I had an Acer Aspire once 
that frize a few times at boot. I learned about a procedure that enabled 
me to flash the BIOS - there was a key combination to begin  with, and I 
wondered if American Megatrends firmware screens can be accessed like 
this, some kind of failsafe. F1, F2, esc, Delete - none of this works, 
not on the internal keyboard, not via USB. Archos won't reply to emails 
(thus ensuring they sell nothing else to me, additionally).

If a later BIOS is made available presumably I'll be able to flash it 
from Windows, but I'd thought we were advised to reset a BIOS to 
defaults before flashing?

Does it look like I'll be sticking with Windows or does anyone here 
have some ideas?

Thanks.

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Accessing BIOS/UEFI with keyboard & USB disabled Alan Sundry <alansundry75@yandex.com> - 2018-01-30 17:30 +0000
  Re: Accessing BIOS/UEFI with keyboard & USB disabled tovisi15@gmail.com - 2020-01-21 15:45 -0800
  Re: Accessing BIOS/UEFI with keyboard & USB disabled tovisi15@gmail.com - 2020-01-21 15:49 -0800

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