Hi, the window 8.1 blue screen message is regarding Kernel error but No details.
After several tentavive I have a good news, Now work fine no crash enymore.
Solution: Main board Bios Updated, all drivers main board updated.

Thanks for support.

progdvb ver .6.97.02 during channel search whid avermedia A867 USB digital key T.

Windows 8.1, intel core i5-4430 cpu 3.00 Ghz ,8 Gb Ram , MSI B85M-P33 main Board.
During crash windows 8.1 shows blue screen and restart.
The avermedia A867 works fine in other PC same windows 8.1 and progdvb ver.
but ...