You may want to get another browser that supports WebGL. The following browsers support WebGL on and allow to render X3DOM content:
If you are in a corporate environment or governmental organization, it is quite possible the IT department prevents you from installing software on your computer. If you know this is the case, please contact your IT department and show them this message.
In case you don't know if you can or cannot install software on your computer, just give it a try. If you find out it's not possible, please contact your system administrator, IT guy, or ask your boss or a colleague how to proceed.
You are surfing with with WebGL Flash installed.
You should see a cyan box above and be able to move it around by dragging it with your mouse.
If you only see a black blackground please check under "about:config" if
webgl.shader_validator = true
If these two values are set and you still see a black background, please click onto the black area, then press the 'd' key, and scroll down to the log.
If there are any (red) error messages saying that e.g. the instruction limit is exceeded, then you need to upgrade to a newer or better graphics card.
Still too slow? Upgrade to a faster graphics card with more memory to speed up your X3DOM experience.