I attached pictures of the problem.
I had to rma board for random shutdowns a couple years ago and I also upgraded power supply to a corsair 600 or 650 watt
This is the specs of computer having problem.
COOLER MASTER Elite 341 RC-341C-KKN1-GP Black Steel MicroATX Mid Tower Computer Case
http://www.newegg.com/Product/Produc...82E16811119193
Microsoft Windows 7 Home Premium 64-bit 1-Pack for System Builders - OEM
http://www.newegg.com/Product/Produc...82E16832116754
BIOSTAR TA890GXB HD AM3 AMD 890GX HDMI SATA 6Gb/s Micro ATX AMD Motherboard
http://www.newegg.com/Product/Produc...82E16813138194
G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Dual Channel Kit Desktop Memory Model F3-10600CL9D-4GBNT
http://www.newegg.com/Product/Produc...82E16820231253
AMD Athlon II X4 640 Propus 3.0GHz 4 x 512KB L2 Cache Socket AM3 95W Quad-Core Desktop Processor ADX640WFGMBOX
http://www.newegg.com/Product/Produc...82E16819103871
Antec NEO ECO 400C 400W Continuous Power ATX12V 2.3 / EPS12V 80 PLUS Certified Active PFC Power Supply
http://www.newegg.com/Product/Produc...82E16817371029
ASUS PCE-N13 IEEE 802.11b/g/n PCI Express Wireless Adapter Up to 300Mbps Wireless Data Rates 64-bit/128-bit WEP, TKIP, and AES WI-Fi alliance WPA, WPA2
http://www.newegg.com/Product/Produc...82E16833320048
ASUS Black 24X DVD+R 8X DVD+RW 12X DVD+R DL 24X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 24X CD-RW 48X CD-ROM 1.5MB Cache SATA 24X Burner LightScribe Support - OEM
http://www.newegg.com/Product/Produc...82E16827135221
Western Digital Caviar Blue WD5000AAKS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
http://www.newegg.com/Product/Produc...82E16822136073
This is the build thread http://hardforum.com/showthread.php?t=1589007
I had to rma board for random shutdowns a couple years ago and I also upgraded power supply to a corsair 600 or 650 watt
This is the specs of computer having problem.
COOLER MASTER Elite 341 RC-341C-KKN1-GP Black Steel MicroATX Mid Tower Computer Case
http://www.newegg.com/Product/Produc...82E16811119193
Microsoft Windows 7 Home Premium 64-bit 1-Pack for System Builders - OEM
http://www.newegg.com/Product/Produc...82E16832116754
BIOSTAR TA890GXB HD AM3 AMD 890GX HDMI SATA 6Gb/s Micro ATX AMD Motherboard
http://www.newegg.com/Product/Produc...82E16813138194
G.SKILL 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Dual Channel Kit Desktop Memory Model F3-10600CL9D-4GBNT
http://www.newegg.com/Product/Produc...82E16820231253
AMD Athlon II X4 640 Propus 3.0GHz 4 x 512KB L2 Cache Socket AM3 95W Quad-Core Desktop Processor ADX640WFGMBOX
http://www.newegg.com/Product/Produc...82E16819103871
Antec NEO ECO 400C 400W Continuous Power ATX12V 2.3 / EPS12V 80 PLUS Certified Active PFC Power Supply
http://www.newegg.com/Product/Produc...82E16817371029
ASUS PCE-N13 IEEE 802.11b/g/n PCI Express Wireless Adapter Up to 300Mbps Wireless Data Rates 64-bit/128-bit WEP, TKIP, and AES WI-Fi alliance WPA, WPA2
http://www.newegg.com/Product/Produc...82E16833320048
ASUS Black 24X DVD+R 8X DVD+RW 12X DVD+R DL 24X DVD-R 6X DVD-RW 12X DVD-RAM 16X DVD-ROM 48X CD-R 24X CD-RW 48X CD-ROM 1.5MB Cache SATA 24X Burner LightScribe Support - OEM
http://www.newegg.com/Product/Produc...82E16827135221
Western Digital Caviar Blue WD5000AAKS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive
http://www.newegg.com/Product/Produc...82E16822136073
This is the build thread http://hardforum.com/showthread.php?t=1589007