Jeez, that IS the whole system, except for the 3 other sticks of ram. Just a basic gaming rig. Everything else is onboard. And I had tried running it with one stick of ram to no avail. Hard drive surface scan is at 89% finished, but if it checks out clean, I'll swap the SATA cables, do a low-level reformat, and reinstall Vista. If that fails, I'll be talking to MSI about an RMA for the mainboard.
I'll open this to the admiring crowd as well..... other suggestions? Any way this could be the graphics card? Any way to test that? Power supply instability?
Thanks,
thanearchon