First, let me give some background information on myself.
I've built my own computer before, although it has been about 6 years since my last time doing so. I've never had any issues with building systems before and I've never overclocked.
Now my issue, I recently built a new system using parts recommended in an article on this site. Everything seemed to work fine at first but within a couple days started having random freezes and restarts, sometimes with a BSOD and sometimes not. I'm running on optimized default settings in the bios, no overclocking at all.
I've run memtest86+, about 5 passes, no errors.
When I ran prime95 it will lock up very shortly into the test.
Temps on all four cores never exceed 56 C.
AMD Athlon II x4 630
WD Caviar Black 640GB HDD
4GB Crucial DDR3 (2x2GB)
Antec NSK 3480 Case (with Antec EA 380 PSU)
Windows 7 Home Premium 64bit
I will be running memtest again overnight to see if any errors come up after more passes.
It actually most often doesn't go to BSOD. First time it auto reboot, I changed the setting so it wouldn't do that. This is actually a build for my mom and I asked if it did BSOD again to write down any file names or things written in english on the BSOD. Here's what she gave me on the only other time it gave a BSOD: