I just built a PC for my brother for Xmas and I'm running into a problem. I put everything together and the PC will flip on for about a second and then shut off. The fans whir and the light comes on but then simply STOPS. I took everything apart and put it back together again to make sure I had installed everything correctly but it continues the same behavior. The components are:

- Intel Core i5-2500 Sandy Bridge 3.3GHz (3.7GHz Turbo Boost) 4 x 256KB L2 Cache 6MB L3 Cache LGA 1155 95W Quad-Core Desktop Processor BX80623I52500

- CORSAIR Vengeance 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model CMZ8GX3M2A1600C9B

- BIOSTAR TZ68A+ LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard

- MSI N560GTX-TI Twin Frozr II/OC GeForce GTX 560 Ti (Fermi) 1GB 256-bit GDDR5 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

- Seagate Barracuda Green ST2000DL003 2TB 5900 RPM 64MB Cache SATA 6.0Gb/s 3.5" Internal Hard Drive -Bare Drive

- ASUS Black 12X BD-R 2X BD-RE 16X DVD+R 12X DVD-RAM 8X BD-ROM 8MB Cache SATA Blu-ray Burner BW-12B1ST/BLK/G/AS - OEM

- Antec EarthWatts EA-500D Green 500W ATX12V v2.3 / EPS12V 80 PLUS BRONZE Certified Active PFC Power Supply

- Thermaltake V3 Black Edition VL80001W2Z Black SECC / Plastic ATX Mid Tower Computer CaseSorry false alarm. I just figured out the right cord to hook into the ATXPWR2 port.