Thanks guys
,
I didn't install any other drivers than the nVidia driver, so after I tried EasyBCD I'll give that a try.
But there's a new problem - I did a fresh install of W7 yesterday with a new copy downloaded from the windows website, I burnt it to a dvd and installed, but now that won't finish. After rebooting to configure, I just get a black screen with Windows 7, RC build 7100 in the bottom right corner. So now I can't boot in safe mode either.
I'll try the options mentioned above first and I'll keep you informed