Thanks for replying.
The issue is that I can't get to the settings for the camera since going to 5MP so I can't reset using that method.
Could there be another way?
I've just purchased the Hikvision DS-2CE56H0T-ITMF 2.8mm Camera
I connected it to my DVR and all was well, I went through the settings options and set it to 5MP video format, now the DVR detects the camera but shows no image. My DVR shows that a 5MP camera is connected, but the image still...