I hve a Dell latitude D610 laptop and I just finished installing the OS. Now I press F8 at the startup and I type an option like -v or something. The guide I am using has been tested many times on the d610. It says to type -f. So I do that, and then I get a white screen with the apple logo for a minute or so, and then the screen turns to bright white!! WTF?!! Can someone help? Thx in advance!