Resurrecting this thread.
I tried the HDMI Detective Plus and still no luck.
The first unit I received just didn't work (only was able to program it once, then it never allowed me to program again), and after an hour with tech support they told me to return it and get a new. Returned defective unit and got a new one, now after 3 hours with tech support I am still having the same issue. With the HDMI cable plugged into the computer and my Onkyo TX-SR706 the computer will not boot.
The only thing that did help a little with the HDMI detective is when you flip the fourth dip switch (hdcp) it would allow me to at least see the post and bios splash screen and starting Windows. After the Windows starting splash screen the display would kick off (right around the time the normal screen resolution would change). I can hear audio but I will not get video at all.
Tech support from Gefen (HDMI Detective Plus) now feels like I don't need the unit at all or at least it won't solve all my problems.
If I reboot the computer and then quickly turn off the receiver, wait for the computer to boot up, then turn on the receiver it works just fine (same thing when I just unplug the HDMI cable from the HTPC during boot up).
I can hook the HTPC up to a standard LCD screen via HDMI and it boots just fine, no issues.
Once the computer is booted up and I connect the HDMI cable i have NO OTHER ISSUES, I can switch my AVR off and on and the projector off and on and I still have display. I can even switch between inputs (PS3, DTV, Xbox, etc) and switch back and I still have display. I also have no issues with playing any content via media center and get full DTS-HD\\Master audio.
Anyone have any ideas out there to this really ANNOYING problem?
One other thing, when I am booted into Windows and I look at the display settings my receiver actually shows up as the monitor. You actually see "TX-SR706" as the main display (same thing in the sound properties of control panel, TX-SR706 is listed). Is this normal?
Thank you, I appreciate any help you can give.