Hi @Martin, I’m concerned about “wireless” even mentioned. Such USB receivers need no kernel wireless support, mostly for network cards, to present themselves as a USB keyboard device. The o/s doesn’t have to know if a keyboard is “wireless” or not. Same with a wireless mouse.
Some suggestions…
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Look for the “legacy support” as mentioned by @samuvuo.
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Try without that USB hub to see if it makes a difference. It adds some complexity for BIOS.
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Buggy BIOS’ and USB devices are not uncommon. I run into this all the time with some old boot-up products that rely on BIOS working and it can be a real pain. The problems get totally masked by most o/s’ but they are very real.