@chrisflow Is there an image at the image SRC HTML tag -s URL? Is the URLs rout all right? Can you give us a website address? Cheers,
What browser do you use? What plug-ins do you have on your browser? I highly doubt that it is because of your computer OR could you at least let us check the website? It might also be because the HTML code might be wrong.
Another idea could be Antivirus? Some antivirus' block certain web images. It's happened to me previously but before I could help you out properly I need to know more. Is it a specific website?
I think this can also be some ISP issue. I spent a month in Europe and for some reason no images on Youtube or Google Images would load. In the US it works just fine.
I would ask if it is just your web site images or pictures do not show, some sites, or pretty much all sites. Then after that I would check your browser and any addons / pluggins and double check their settings. Best of luck, hope you get it squared away soon.