Ok .. hmmm ..
So there is one HDD & it is IDE ..
Now Enter the bios & see if the IDE cables are disabled .. usualy the is somthing called IDE configuration .. maybe set to compatible on sata only ... You can set it to enhanced ..
Or maybe the PATA controller is just disabled !
also in the boot order there may be no hdd in it .. add the hdd to it & put the "boot from other devices = yes"
- If you have a FDD make sure there is no floppy disk in it ..
if nothing works ..
try to boot from a cd :
windows xp setup : do the setup see the HDD ?
Hiren Boot 8 : Partition magic 8 can see the HDD ?
Hiren Boot 9.8 or later : Mini windows XP See the HDD ?