after update black screen win 8

i installed windows 8 fine, ran update fine, but then selected graphics card update on optional updates and now when i boot to windows all i get is a black screen! please help!!!!!!

oh and it defo boots because i hear the sound of windows etc.. just doesn't show anything on the screen

Can you boot into safe mode (hold down F8 during boot)? If not, you might have to push Fn-F8.

If you can get into safe mode, follow this to uninstall the problematic graphics update (those instructions are for 7 but I'm hoping that MS hasn't changed all that much here).

i do but it freezes on a screen saying setting options or something! sorry

You'll just have to reinstall & not update those drivers the next time...

Remember, Windows 8 Developer Preview is pre-beta software, only meant as a basic proof-of-concept framework; while it may look it, it's not a fully-fledged OS & all the new graphical gumpf they've added-in with the Metro UI is only optimised to work on the specific trimmed-down version of Windows 7 they built it on.

Change the graphics drivers, even to "better" ones, and you undermine the whole architecture...

And so, I can only say: Better luck next time!