coolinshot

Hi (Newbie so apologies for lack of knowledge) I have set up an AVTech (AVC760Z) at my home which I had previously set up in my Father in Law's business (no longer required). The box works fine, I have it on the network and can view it from the E Server Software. However, when I log in via a browser (Firefox, IE, and Opera) The screen shows all the controls as they should be but the viewing pane shows a white square with no images from the cameras. I would welcome any help on this BTW the firmware has not been updated on the DVR because the options I have seen for downloads don't seem to list the exact model and I don't want to completely mess up the installation (model is AVC760Z) Col