Back in June of 2009, I purchased a load of new parts on Newegg to use in building a completely new system, to replace an old Dell P4 that was not aging gracefully.
The system has the following components:
Motherboard: Asus M4A78T-E (BIOS Rev. 3303)
CPU: AMD Phenom II X3 720 @ 2.8 Ghz
Memory: 2x1 GB DDR3 (Crucial Ballistix 2GB (2 x 1GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Dual Channel Kit Desktop Memory Model BL2KIT12864BA1336)
Power Supply: 580W unit (Mushkin Enhanced 550250 580W ATX12V / EPS12V SLI Certified CrossFire Ready Modular Active PFC Power Supply)
Operating System: Windows 7 Ultimate x64 (Retail) (Free for being a Launch Party host)
Other part specifications available, just ask.
A CPUID Hardware Monitor screenshot detailing current environmental temps/etc can be viewed below.
This screenshot was taken after the system had been up for 1 day & 19 hours. It crashed shortly after.
The system has trouble during the Windows boot process, often freezing on the animated flag or shortly thereafter, sometimes silently, sometimes beeping sporadically or steadily. If it makes it past the flag, it may bluescreen later in the boot process before the login screen appears with various BSODs, at least 5 different ones that I've seen. Often, it takes 10 hard resets to allow the system to boot successfully.
After it boots, it is often apparently stable, but will crash with no warning anywhere from 1 to 8 days later. (I leave the system on 24x7, shutting off the monitor at night.) Often I come home to a monitor that will not wake from sleep mode when I press a key on the keyboard along with no hard drive activity, indicating a crash. Sometimes I come home to a severely distorted display, also indicating a crash.
While it is running, it has only 1 apparent abnormality - If audio is playing from an application, such as a video file, and I stop the playback or close the app, the last few milliseconds of sound will replay in a continuous loop, which sounds similar to a buzzing sound, changing pitch depending on what the audio in question is. This phenomenon does not always occur, and I cannot reproduce it at will. In all cases, starting anything that plays audio will stop the errant sound and play audio as expected.
All drivers are up to date, all updates have been applied, and Windows reports nothing out of the ordinary. The system passes its BIOS POST with no problems.
Any help would be very much appreciated.