clean xp pro installation

i am trying to install xp pro on to a computer:
cpu amd k6 2/4oo
memory 256
power supply 130w
hard drive 3Gb
text phase is fine but when it reboots the first time to start gui phase, i can see window xp logo then it reboots it does not get any further. does not matter what i do.compatability does not report anything.
this computer had windows 98se installed i deleted everything,its a clean installation.
i ideas????
thanks