Black screen on loading / Rendering objects underground(?!)

[NovaStar]

Neither vanilla or BDSaleM clients let me get past the initial splash screen, which disappears after a few seconds leaving blank screen.

The Enders client lets me log in, but both I and any objects seem to be rendered underground - please see attached screenshot. You can see my character and the leaves from a tree in the texture that should show rock face.

Have uninstalled Java, deleted cache files and reinstalled both win32 and 64 bit versions of both Java versions 6 and 7, but still no fix.

Any suggestions?

[Chiprel]

What graphic card you have?

It might be good idea to visit your graphic card manufaturer site and check for newer drivers.
If you have newest one, try installing ~1y older ones it's weird how many times that helped me with some games(*usually older ones through) xD

[Kerlear]

look here viewtopic.php?f=10&t=767&p=7403#p7403