|Whether manipulating the cables depends on the BIOS. Older BIOS when configured to boot from Hard Didk would search the Primary/Master/Slave/Secondary/Master/Slave till it found a disk it could boot from.|
Modern BIOS are configured to boot from a specific disk and it will attempt to boot from that disk regardless of where it is in the cabling.
Even then if the BIOS is configure to boot from the hard disk first, it will just ignore a CD/DVD drive if it finds a bootable hard disk.
I read elsewhere that wired keyboards sometimes won't talk to the BIOS correctly without current drivers installed.
How you going to install drivers when all you have is the BIOS? Not possible.
USB and wireless keyboards might be a problem but there is absolutely no reason at all why a PS/2 keyboard will not interact with the BIOS. They have been doing it for the best part of twenty year, no reason why it should change
For computer without PS/2 ports USB is the default. A computer must be able to operate with a keyboard from the BIOS without additional drivers otherwise you would never be able to configure it from new.
Like Dave, I suspect you have something more than a faulty OS going one. Sounds like some serious hardware problem.
message edited by StuartS