Will not POST with a USB mouse or keyboard plugged in

Posted by Thomas O on Super User See other posts from Super User or by Thomas O
Published on 2010-12-24T13:50:28Z Indexed on 2010/12/24 13:55 UTC
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usb

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bios

I have an Abit KN9 motherboard, and a USB keyboard and mouse. The computer will not POST with the keyboard or mouse plugged in, but they can be used (and they are fully functional) if you plug them in later, after POST. On the POST side of things, it hangs when it shows the installed processor, and goes no further - pressing DEL to go to setup will not work. I've tried disabling legacy USB support as recommended, but can't find the option anywhere in the BIOS.

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