Sorry for the long post but here goes. Okay, I think I may be getting closer to figuring out the issue. I left it running with monitor off with no reboots for almost a month just recording and streaming from it, no freezing and no errors. As I said in my last post I bought a new HDMI to Mini HDMI cable so last night I plugged that in to my TV and video card thinking since it was on for so long with no problems then maybe I'll be able to use it as I had in the past. I was wrong, I booted up and loaded up SageTV and turned on live TV and I went to sleep. When I woke up I was staring at a black screen. So it wasn't the cable and it's not a sleep or hibernate issue as they are both disabled. So I reboot again and think since it was running so well with the monitor off I'll do that again but using the TV instead of the monitor I brought in to troubleshoot, a recording comes up and I start streaming it as usual but then the recording stops playing on the computer I'm streaming to, first thought was network but everything looked good there so I went to the HTPC and switched back the source to HDMI 1 and it was the blank screen again. Now I've rolled back drivers to the ones slugbug said he was using in another thread since I know he uses 460's in hopes that'll help but now I'm not sure of the driver or software issue.
Could it be that just the Mini HDMI port crapped out? Since even after switching sources on the TV and just letting the computer run still made it go to a blank screen as where on the DVI it ran for close to a month with no issues? Would a good test be swapping out my 460 2Win with a regular 460 and see if there is a change? If my TV had DVI I'd try that but it doesn't so I can't try that. With it running for so long like it did, is there any other ideas? Could it still be PCIe?