Well, looks like i'm getting a replacement surface pro

Finally after over a week i've been able to verify that my computer is playing up.  I now have to send it back and I should get a new one (refurbished) within 8 days.  Not bad really.  the big problem with this is that i'm due to work from home again soon so really need it returned to me before then.  We shall see.  I actually managed to get my old laptop working so I should be fine...