Hi "Dog",
first of all, your English is good enough to understand you
I think your problem is an overloaded CPU! Everytime when there is not enough available resources for Yowindow, the screen will be in grey scale and the flash is "frozen"
Have a look on my PC (win 7/64 bit, 8 GB RAM, Quad 2,33 Ghz)
Without Yowindow:

- Unbenannt.JPG (12.34 KiB) Viewed 2437 times
With running Yowindow:

- Unbenannt2.JPG (12.26 KiB) Viewed 2437 times
Please check your CPU usage. Perhaps it would be helpfull to reduce the quality (find in the options of Yowindow)
Werner