I have now got my photos to load into a new db thanks to this forum but all the previews are grey. The tags, metadata are all there, the previews 1:1 were generated. I am running windows 10. I thought the problem might have been with the photos having already been in lightroom 4.x so I restarted lightroom, chose new db and imported a photo just taken with the same result. I have seen other questions on this and I have checked that the output resolution from my video card matched my monitor.
Could you please confirm which version of Lightroom are you using?
Refer this article to check for the monitor calibration : http://www.lightroomqueen.com/articles-page/how-do-i-change-my-monitor-profile-to-check-wh ether-its-corrupted/
Thanks lots for that. I figured it was my colour profile as I had created a new db and imported one new pic and got same problem but i had no idea where to change it.