Thanks for all the helps
I exchanged GT520 for the Radeon HD 6570. The Radeon 6570 was a truely a plug&play. It recognized my plasma LCD, receiver and the VGA monitor with no problem. The handshake works everytime no matter in which order I turn the HDMI devices on even I turn only the PC was on then other devices later on. The TM5 plays MKV and .TS with HD sound bitstream to the receiver flawlessly with no stuttering. I watched two movies ~ 6hrs while apps and explorer running in the background with no problem.
There was a minor problem tho.
My setup: PC HDMI to 1080P Pioneer HDMI to HDMI TV, PC DVI to TV DVI, VGA PC to VGA Monitor.
The video output via poineer receiver to TV was degrading so much to the point I can see each pixel in the letter clearly and the movie was so bad. No matter how I play with the resolution or the using the advance CC apps, but no improvement. I've tried turn on/off HDMI passthrough (only for audio tho) but no helps. Currently I am using PC DVI to TV DVI and use extended display to output bitstream HD to my reciever. I must say that using my PC to play HD movies a lot better than the china made Egreat 32B media player that I've had for years in terms of subtitle and more flexibility. However, I am thinking of getting the Asus EAH6670/DIS/1GD5 AMD Radeon HD 6670 to be able to have 3 monitors output. This one has a Displayport. Sometime I work online while watching a movie and with my current setup/video card, I only have two monitors output and they both used
. Welcome any suggestion.