Hello, I've purchased a "computer" on TigerDirect.com by ordering parts to place together. Here is what I got: ASUS P8Z68-V LX INTEL Z68 LGA1155 MOTHERBOARD Intel Core i7-2600K 3.4Ghz Unlocked LGA1155 CPU Corsair High Perform Vengeance 8GB DDR3 1600Mhz2x4 Seagate 1TB Serial ATA HD 7200/64MB/SATA-6G Sony Optiarc 24X DVDRW SATA OEM Thermaltake 750W Modular Power Supply. 80+ Bronze EVGA GeForce GTX 550 Ti 1GB GDDR5 PCIe 2.0 Thermaltake V3 Black Edition Mid Tower Case Corsair SP120 Performance Edition 120mm Fan TwinPk I believe that everything should work together just fine...I saw not conflicting components. I've building the computer, placed everything as it should be...And I can't get it to boot for more than 3 seconds or less and it shuts down. I have a few ideas of what it might be, but I cannot test my theories until Monday (due to lack of resources at my house) at my school's computer clinic. I have moderate computer knowledge and would like to see if anyone could help me figure out what my issue might be.. I'm open for suggestions. Thanks in advance! A.