Good evening, Just finished building a new system and it doesn't seem to post. It starts up and runs for about 3-5 seconds and shuts down. System includes the following: Case - Rosewill Challenger U3 PSU - Thermaltake TR2 700w CPU - AMD Phenom II x4 965 Mobo - ASUS M5A97 EVO RAM - G. Skill Ripjaw 16gb 4 x 4gb HDD - Wd Caviar Black 1TB VGA - Sapphire hd7850 2 gb ddr5 Optical drives - Lite-on 24x dvd, LG 24x dvd To begin all green mobo lights are on. Push power button and system power up. All fans are running for about 3-5 seconds. Then red cpu led flashes and system immediately shuts down. Installed cpu correctly and used artic silver thermal paste before installing heatsink. It can't be overheating in that short a time. Could it be a DOA cpu?