It seems like you are experiencing issues with your display driver on Windows 8 RP x64, where the display driver stops working and restarts, causing the screen to go black momentarily. Updating your NVIDIA drivers might help resolve this issue. You can download the latest NVIDIA driver version 302.80 for Windows 8 RP x64 from the link you provided:
NVIDIA DRIVERS 302.80 Certified. Installing this updated driver should help improve the stability and performance of your graphics card. Make sure to follow the installation instructions provided by NVIDIA to ensure a smooth update process. If you encounter any difficulties during the update or if the issue persists after installing the new driver, feel free to seek further assistance...