A further interesting development,dug out another spare IDE Hard Disk from the junk box formatted, loaded windows, kit drivers ect,configured it as slave bunged it in machine with Sata disk as master,booted to bios setup,no sign of this new IDE slave in the boot device selection page,rebooted and it is sitting there happy as a pig in clarts in the My Computer Page? I can access it even copy stuff betwixt the two hard disks,is this normal?this is the first machine I have built using Sata disks,nothing urgent about this,one is just pottering about out of curiosity.