My PC is an HP e9150t quad core machine using an Intel i7 CPU (firstname.lastname@example.org GHz). I have 8 GB of RAM and am running Windows 7 Home Premium-64-Bit.
I am using 2 ATI Video cards (the 4650 came installed with the PC and I added the 4550). I'm in the process of upgrading from 2 monitors (and an HDTV) to 4 monitors (and an HDTV). So far, the following activities have been SUCCESSFULLY COMPLETED:
- With all 4 monitors connected (through HDMI and/or DVI connections), everything displays on the 4 computer monitors, as desired
- Thanks to the recommendation of Expert Exchange, I was turned on to Monoprice.com (which is amazingly fantastic), and purchased a 1 x 4 HDMI/video splitter so that one of my monitors is duplicated on my HDTV to allow movies, etc. to be watched (that originate from my PC). This has also been successfully completed
As I booted up my system today, I was greeted with a problem that Expert Exchange has successfully resolved in the past. Namely, when I want to listen to my HDTV and watch something downloaded through the Internet onto my PC, I have to switch the playback device for the sound from "Realtek High Definition Audio" Speakers (used on my PC-only) to "ATI HDMI Output."
When I tried to accomplish this today, as evidenced in the screenshots, both instances of the "ATI HDMI Output" playback devices showed "not plugged in." I remember when I had a similar problem about a year or so ago, that it took playing with the bios, doing something with the drivers, rebooting, etc. before everything was operating correctly.
That was when I was only using 2 monitors. Even though everything was perfectly functioning last night, this morning the problem is back. I am attaching screenshots that I hope will be helpful for diagnosis but cannot be sure.
I don't know if the drivers are out of date or I need a new version (if one exists) of the Catalyst Control Center or what.
Right now, the sound functions fine for my PC speakers, and when I view things on my HDTV (streamed through my PC), the video is fine and there is no audio.
What do you recommend? Whatever you recommend, please do so from the perspective that I am a relative novice when it comes to video and audio cards, drivers, etc. Thank you very much.