Please excuse the tardiness of my reply.
I tried the above, but still the same. Thanks for the reply though.
This cr@ppy bios doesn't have optimised defaults, but I tried the other settings one by one.
The only other thing I can think of is an IRQ that needs to be assigned. I read a M$ article about reserving IRQ12, but that hasn't helped.
I have another HD, so when I get some time, I will try a fresh install and see if that helps.
Still, if anyone has any ideas, please let me know.