daz - am so sorry. You were right and my only excuse is that I was so fed up with hard drives and optical drives that I couldn't get my mind round memory. I will not pass you by so easily next time, daz.
I am all over embarrassed !!!!!!!! Thanks again.
Flying Pram, I removed first one and then the other. The first one turned up trumps but slowly - the second one gave the MS logo just a blur. put them both together and it was back to square one. There does seem to be a similarity there. I might get your help in regard to the DVD drive but have yet to try it out. A USB type sounds like just the job. Your advice on a PM would be useful thanks.