I recently stumbled into this thread as I’ve been having these same problems with Cyberlink PowerDVD and the LG GGC-H20N Hybrid DVD player. The symptoms were exactly the same as described by Look_cows,
Sound was fine but no video, on some Blu-ray movies I would only see
subtitles or the selection menu. Same problems on Blu-rays or HD-DVDs,
First Let me describe my setup:
HTPC with ECS 780G Motherboard v 1.0
IGP Graphics Radeon HD 3200 with ATI Display Graphics 8.5
Windows Vista Ultimate (32 bit) w SP1.oo
PowerDVD 7 (version 7.39 ?)
LG GGC-H20N Blu-Ray/HD-DVD Drive
All this hooked up to my SAMSUNG 7 Series LCD (HDCP Ready)
Until today I had been trying to figure out where in my system
was the problem, I toiled with SATA Drivers, ATI CAtalyst 8.11, AHCI, witchcraft and anything I could try to get this system to work. After reading this thread I realized that my problem was not the LG Drive or any HDCP related problems. It had to be the ATI Graphics Display drivers.
I decided to go back to my original ATI Drivers version 8.5 (ECS), and thru the custom setup, I prevented the AVIVO drivers from being installed.
It worked !, I still have to verify if it will work with the AVIVO drivers but
I’ll leave that for this weekend. Happy to report both Blu-ray and HD-DVD are working like a charm, no skipping, lagging or any other kinds of problems.