I build this setup about 8 months ago, and since I have had an increasing amount of system crashes. Most of them are BCC 124, various 'caused by' drivers.
Motherboard: ASUS M4A78T-E
Processor: AMD Phenom II X4 955 Black Edition Deneb 3.2GHz
Memory : 8GB (4x2G) Kingston HyperX DDR3 1600
Video Card: XFX Radeon HD 5750 1GB 128-bit DDR5 PCI Express 2.0 x16
NIC: PCI-Express Killer Xeno Pro Gaming Network Card
Power Supply: XCLIO STABLEPOWER 1000W
Running Windows 7 Home Premium 64bit
I've been doing a lot of troubleshooting, and I think I have narrowed my crashes down to my video card. Right now I am running off the on-board video adapter, and so far, NO CRASHES. It's only been about a day, but seeing as I WAS crashing multiple times a day, I think I found the problem.
Now, the question is, how to fix it. I've been reading lots of forum article, and it seems that this is a big issue for a number of people.
1) Some people were reporting that disabling the ATI HDMI Audio driver was helping their 2D instability issues and so I went a step further and DISABLED the ATI HD AUDIO DEVICE in Device manager and I haven't had a 2D crash since. Now I notice you are using your HDMI socket but presumably not for sound, yes? If so you might try this yourself?
2) I installed Battlefield 2 on my machine and would hard crash with a Brrrr sound every single time after less than a minute. I noticed that full screen video was a problem for many users of my card and so ( despite knowing that video and 3D applications are completely different animals) I tried running the game in windowed mode and was able to set it up and play without issue. I then restarted and selected Fullscreen and have played for hours without issue. Might you try this with your games?
The first thing I would do is go to Windows Update. then I would go to AMD's site and get new drivers. then uninstall the old ( card ) from my device manager and reboot. Reinstall new drivers. Trash the network card. Big waste of money and may be the culprit ? What are you powering your system with ? What are you using for sound ? If you're not using the ATI sound you can either do an advanced install and not install it or disable the on board sound in the BIOS. Or you can look in the control panel under sound and try fixing it there. Sound drivers may be the problem... ???
Maybe Hardware Acceleration has something to do with it? Have you tried disabling that?
I never overclocked it before. I've tried solutions that involve overclocking it (apparently, some cards have some trouble idling). After I found out they didn't work, I turned it off.
Just found this. 1) Some people were reporting that disabling the ATI HDMI Audio driver was helping their 2D instability issues and so I went a step further and DISABLED the ATI HD AUDIO DEVICE in Device manager and I haven't had a 2D crash since. Now I notice you are using your HDMI socket but presumably not for sound, yes? If so you might try this yourself?