[KenKelley]

Originally Posted by aznetbear

nope, preview window has disappeared on me too and i am running hoster 5.04. not sure what causes it to happen but, do know it happens when it's undocked/floating.

when it occurs, i just reset the displays via tools option and rearrange the windows again.

Although I have not experienced the preview screen disapearing, I have had the both screens covered in black if I did the wrong thing (such as open a new window to multitask). The work around for this was selecting "Always on Top". Have you tried that by chance?

There is another possibility.....

NVidia just released a new driver for your card (GeForce 8600M) on Oct 24 (same driver for my card). The Verde 285.62 Driver

This driver is the only one that shows in the "Other Details" notes, "Supports single GPU and NVIDIA SLI technology on DirectX 9, DirectX 10, DirectX 11, and OpenGL". (I think NVidia finally wised up)

I have been running this driver since it was a Beta (August this year), no longer needing to use the "Always on Top" option with the computer running much cooler and enjoying excelent results!

Might be worth a try.