imam isti problem na jednom računaru,matična ploča je asrock K7S41GX,tastatura spojena na ps/2 port,pritiskam F2 po uputstvu iz manuala za dotični model matične ploče
ftp://europe.asrock.com/manual/K7S41GX.pdf
3.1 BIOS Setup Utility
This section explains how to use the BIOS Setup Utility to configure your system.
The Flash Memory on the motherboard stores the BIOS Setup Utility. You may run the
BIOS Setup when you start up the computer. Please press <F2> during the Power-
On-Self-Test (POST) to enter the BIOS Setup Utility, otherwise, POST will continue
with its test routines.