Have you heard of any issues with images not displaying in Internet Explorer (v8, v9) but they DO display in both Firefox and Chrome?
Occasionally I have seen .PNG file not display in IE (normally in IE 8.0). I recommend that all images be saved and uploaded as a .GIF or .JPG. Also, if there is any unusual HTML coding around the image, it can cause problems with IE displaying it properly. Chrome and Firefox tend to "fix" HTML problems automatically.
Note: Our recommendation is to make the switch from Internet Explorer to Edge (or Chrome/Mozilla), as Internet Explorer is no longer supported by Microsoft.