I’m not sure if this is the same issue, but it sounds very similar.
Last year, I was looking to purchase a laptop computer. So I installed Blender onto a flash drive so that I could test the various laptops for performance. I found that there were a bunch of laptops that would display a black/blank screen when the F12 (render key) was pressed. The render would be working properly (in the background), but the render window wouldn’t display anything - hence the blank/black screen. Once the render was completed, if you would move the window (by grabbing the title bar), the rendered image would display fine. After some research, I realized that all of the laptops that displayed this problem had an onboard Intel graphics card. I don’t remember the exact graphics card model, but I do remember that they were all Intel video cards (that were built into the motherboard). Needless to say, I purchased a laptop with an AMD.
Well, this year I am looking to possibly upgrade my laptop. So once again, I installed Blender (2.49a) onto my flash drive and have been going to the various stores to test out laptops. Once again, I have run into the same issue. The laptops that have this issue all have the Intel Graphics Media Accelerator 4500MHD onboard video.
If this is your issue, then it probably has to do with the video “card” that you have on your computer. You might be able to fix the issue by purchasing a different card.