Yeppers ISA...lol...it was a $1500.00 system in 99'
I have come the conclusion that the hard-drive must be bad or needs to be flashed with firmware?!?
I found an old 540M HD and it detected it and installed it fine with the other 4G one installed also.
Its the kids 'puter and it's also on the family network. They are 8 and 10 yrs old and good for them.

Thanks for all your help,
Steve