If you press ctrl+alt+F1 does a terminal suddenly show up? If so you can edit your xorg.conf file described in this
post by the General. Make sure the screen size and Frequency is correct.
Before that you could also try pressing <ctrl>+<alt>+<-> that will shrink the screen size. You'll probably have better luck editing the xorg file and making sure everything is correct. I had this happen before too, and never found anything on it and never got it fixed. My LCD in Linux would not work but then I found out the CRT would. So I've used that since. That all happened when I was more of a n00b, so I never tried editing the xorg file, so no guarantee it will work. Sorry, I know thats not what you wanted to heard. Best of luck though. Please let me know if it goes well or not. I have heard of others on the site here that told me they had the same problem too, so its one I'd really like to sometime figure out.