My computer runs stable doing non-taxing stuff. I first noticed that there was a problem when playing Civ5, the computer would reset often (no BSOD). Doing a few things to try to fix Civ5 didn't help. The CPU/GPU Temperatures seemed within normal limits. The graphics card handled FurMark just fine. However, when I try the OCCT CPU stress test, it resets almost immediately. It also reset after some time on the power supply test. Then I got to wondering about memory (I originally had bad memory, but it resulted in system hangs, not resets), and memtest on this new memory won't run for more than 2 or 3 passes before it resets the system. I'm not sure how to narrow it down from here. Thanks.
Intel Core i5-3470 3.2GHz
ASRock H77M Micro ATX LGA1155
G.Skill Sniper Low Voltage Series 8GB (2 x 4GB) DDR3-1600
MSI Radeon HD 7850 2GB Video Card
Corsair Builder 500W 80 PLUS Bronze Certified ATX12V
Microsoft Windows 8 (OEM) (64-bit)
Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
Samsung 840 Series 120GB 2.5" Solid State Disk
Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer
Asus VS239H-P 23.0"
Intel Core i5-3470 3.2GHz
ASRock H77M Micro ATX LGA1155
G.Skill Sniper Low Voltage Series 8GB (2 x 4GB) DDR3-1600
MSI Radeon HD 7850 2GB Video Card
Corsair Builder 500W 80 PLUS Bronze Certified ATX12V
Microsoft Windows 8 (OEM) (64-bit)
Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive
Samsung 840 Series 120GB 2.5" Solid State Disk
Asus DRW-24B1ST/BLK/B/AS DVD/CD Writer
Asus VS239H-P 23.0"