I bought a ibm netvista 6646 p3, it seems to have some kind of keyboard lock so i cant use any usb keyboards ( it does not have any ps/2 ports )

I have cleared the bios, removed battery but it seems to still be valid, i might be able to reprogram bios but at the moment i have everything in a storage and wanted to see if any one knew a better way to bypass it.

I do have something like:
system-security keyboard is locked
system-security keyboard is unlocked
administrator password and start order has been removed.

then it jumps in to bios but i am not able to use the keyboard, have tried few keyboards usb keyboards