unable to install RH7.1 and RH7.2

Dear all;
i tried to install redhat 7.1 and 7.2 on intel 440GX.
RH7.1 installed by using image bootable floppys installation part is well and good but after reboot it will give the below error
scsi:aborting command due to time out pid0,scsi0,channel0,id0,lun0, in quiry 00 00 00 ff 00
and roles above error by keep on increasing the id number and system will not boot
For RH7.2 also tried with “apic” linux kernel parameter this is also have same prob

pl Help me

srinivasa rao