Thanks for the reply Pete.

I was suspecting the hard drive/s and what you said supports that.

I will transfer the programs I want to keep to the PC and do the clear and delete everything.

If there are still problems I will have to look at replacing the hard drives.

Is there a handy link to a "how to replace the hard drives"?

Also is there a way to check the drive before replacing or should I do it on my PC after it has been removed?

Thanks again.