A little help please

When I got the redownload link to redownload NL after losing it, I istalled it, When I run the simulator, it says no 3d graphics accellerater detetected. I know I have a 3d accellerater because im still using the same computer that NL was previously on. The only change to the computer was a new hard drive. anyway I can find out if the 3d accellerator is working? any help would be appreciated.

I sometimes get this message aswell, in the same circumstances. I simply go and redownload the drivers for me 3d graphics card www.nvidia.com in my case...no idea what your using, that does the trick for me

Driver issues drive me nuts. When everything uses the same driver, the world wil be a better place.