Hi Gadget - still didn't get a notification even though I've ticked the appropriate box. The images were coloured when transferred to my old laptop, but were black and white on opening, then the thumbnails went black and white on the old laptop, so I guess that's what got transferred to the new laptop. It is only that one particular set of photos, all previous photos are correct.
The hard drive went on my old laptop, the computer bod was going to put a new one in and to do that he, apparently, had to clone the new drive with the old drive. Anyway it wouldn't work, it kept getting half way through cloning and then stopping. So I decided the best thing to do would be to buy a new laptop, especially as I have a lot of stuff that I didn't want to lose. The old laptop was resurrected long enough for me to copy folders etc. to new laptop. Then everything was cleared to revert back to manufacturer's default (plus my previous laptop from 4 years ago that had also died) and we gave them to our 10 year old grandson who is at a "technical" camp this week and required old PCs/laptops for him and the others at the camp to take apart to see how they work (or don't work in my case).
I'll not worry about these few photos for now, my husband took loads with his camera which he has downloaded to his notebook so he can always transfer a few to me if necessary.
Thanks for all the suggestions.
Lizzie