9 hours and no one answer here .....
someone say something...............
Thank you for your feedback on this matter. As you may know the driver that has been provided for this operating system, is a beta release.
We have provided an Intel Communities Forum to discuss your experiences with the preview driver program for Window 8.1* Preview here
Please go ahead and post or find a similar issue on this section.
yeah Thanks for late reply and I'm not using Windows 8.1 preview one I use the final one the RTM. anyway I'm waiting .. to be fixed.