I have a Panasonic TC-L32U3 and have been running a Palit GTS 250 (1GB Green) on it for nearly 2 yrs. It's always booted up fine to desktop via DVI or HDMI and switched inputs from TV to PC with no problems. The Nvidia Control Panel also shows the display as HDCP capable. Recently I tried buying an MSI 660 Ti PE OC. It would not boot to desktop on either DVI port. It would boot on HDMI, but yield BSOD when switching from TV to PC input. The Nvidia Control Panel was also showing my TV as not HDCP capable with the 660 Ti.
I took my system to my friend's place and on his 5 yr old Dynex TV it booted up on DVI and had no trouble switching from TV to PC input without any BSOD. I put my GTS 250 back in and no such problems with booting, input switching, or HDCP detection. I also tried the Cyberlink BD & 3D Advisor test today, which shows my TV as passing HDCP capability.
So my questions are:
1: Does anyone else PC game on this TV?
2. What GPU are you using?
3. Are you having any of the above problems?
Other specs are:
ASUS P6X58D-E MB
Windows 7 64 bit OS
Yamaha RX-V371 AVR