I have a Sony VCG LA2 and recently upgraded from Vista (Home Premium) to Windows 7 Ultimate. It boots up perfectly, I see the Windows 7 logo, however the screen goes black & not even the mouse is visible.
However, when it goes into sleep mode and I press enter, the screen is perfect & everything operates normally.
To get round the issue, I have changed the sleep button to kick in after 5 minutes so that the black screen disappears after these 5 minutes.
I have updated the Nvidia drivers & still have this annoying black screen. I