Stuck at " running /sbin/loader " on CentOS 5 using PS/2 keyboard

I was installing CentOS 5.5 on a IBM x3550 M3. But somehow the installation procedure was stuck and stops at "running /sbin/loader" I waited for a while after 15 min, but it has not moved away from the "running /sbin/loader".

I suspect that my PS/2 keyboard with my PS/2 connector to usb converter for my keyboards was an issue after reading some forums that have raised such an issue.

I changed the keyboard to a usb-keyboard and the issue was gone.